1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Novay_Z [31]
3 years ago
8

B. Why does using FOIL on polynomial expressions match so closely to integer

Mathematics
1 answer:
Anastasy [175]3 years ago
7 0
FOIL is a mnemonic rule for multiplying binomial (that is, two-term) algebraic expressions.
FOIL abbreviates the sequence "First, Outside, Inside, Last"; it's a way of remembering that the product is the sum of the products of those four combinations of terms.

For instance, if we multiply the two expressions
(x + 1) (x + 2)
then the result is the sum of these four products:
x times x (the First terms of each expression)
x times 2 (the Outside pair of terms)
1 times x (the Inside pair of terms)
1 times 2 (the Last terms of each expression)
and so
(x + 1) (x + 2) = x^2 + 2x + 1x + 2 = x^2 + 3x + 2
[where the ^ is the usual way we indicate exponents here in Answers, because they're hard to represent in an online text environment].

Now, compare this to multiplying a pair of two-digit integers:
37 × 43
= (30 × 40) + (30 × 3) + (7 × 40) + (7 × 3)
= 1200 + 90 + 280 + 21
= 1591

The reason the two processes resemble each other is that multiplication is multiplication; the difference in the ways we represent the factors doesn't make it a fundamentally different operation.
You might be interested in
What is the solution to this equation? 4x^2+98=0
Bess [88]
There is no real solution

6 0
3 years ago
Nicole used 3/8 of her ribbon to wrap the present. If she used 6 feet of ribbon for the present how much ribbon did Nicole have
lilavasa [31]
You would set up a proportion. 3/8 = 6/x... cross multiply ( 3*x = 3x and 6*8 = 48)  3x = 48... divide both sides by 3 (3x/3 = x and 48/3 = 16)

So, she originally had 16 feet of ribbon.
6 0
3 years ago
Create and solve a system of equations and solve for x and y.
Helga [31]

Answer:

Step-by-step explanation: x+4-5=y

8 0
2 years ago
Please help, I’ll mark as brainliest!! The picture is above :)
Ray Of Light [21]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable

Exact Form:

x = - 25/8 \frac{x}{y}

Decimal Form:

x = -3.125

Mixed Number Form:

x = - 3/1/8 \frac{x}{y}

Step-by-step explanation:

5 0
2 years ago
What is the square root of 8 and why?
kicyunya [14]

Rewrite <span>88</span> as <span><span><span>22</span>⋅2</span><span><span>22</span>⋅2</span></span>.Factor <span>44</span> out of <span>88</span>.<span><span>√<span>4<span>(2)</span></span></span><span>4⁢2</span></span>Rewrite <span>44</span> as <span><span>22</span><span>22</span></span>.<span><span>√<span><span>22</span>⋅2</span></span><span><span>22</span>⋅2</span></span>Pull terms out from under the radical.<span><span>2<span>√2</span></span><span>2⁢2</span></span>The result can be shown in both exact and decimal forms.Exact Form:<span><span>2<span>√2</span></span><span>2⁢2</span></span>Decimal Form:<span>2.82842712<span>…</span></span>
8 0
3 years ago
Other questions:
  • 90 PTS!!!
    5·2 answers
  • What's the answer to this problem I'm stuck
    10·1 answer
  • What is the equation of the plane that contains the triangle shown in the diagram?
    9·2 answers
  • During soccer practice, Alexis tries to score a goal 3 times. For each attempt, the coach writes either G (goal) or N (no goal).
    9·2 answers
  • On a road trip, Yousef drove the same distance everyday for 8 days. On the ninth day, he drove 100 km. He drove a total of
    15·1 answer
  • 6w + 10w - 7y = 5 x =3 and y=7
    9·1 answer
  • Find the area of a square with a side that measures 2.2 centimeters.
    5·2 answers
  • Please help ASAP!!! Will give 10 pts!!​
    6·1 answer
  • For questions 15-17 use this triangle.
    15·1 answer
  • Consider the following function f(x)=x^2 + 5 write the function in vertex form that shifts right 3 units
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!