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
anzhelika [568]
3 years ago
7

Subtract: 3x 2 -7x 4 from 5x 2 - 3x 8.

Mathematics
1 answer:
Andrew [12]3 years ago
4 0
(3x² -7x⁴) from (5x² - 3x⁸)

= 5x² - 3x⁸ - (3x² -7x<span>⁴ )

= </span> 5x² - 3x⁸ - 3x² + 7x<span>⁴ 

= </span>- 3x⁸ + 7x⁴ +  5x² <span>- </span><span>3x²
</span>
= - 3x<span>⁸ </span>+ 7x⁴ +  2x<span>²</span>
You might be interested in
When the expression $-2x^2-20x-53$ is written in the form $a(x+d)^2+e$, where $a$, $d$, and $e$ are constants, then what is the
Sladkaya [172]
We start with 2 x^{2} -20x-53 and wish to write it as a(x+d) ^{2} +e

First, pull 2 out from the first two terms: 2( x^{2} -10x)-53

Let’s look at what is in parenthesis. In the final form this needs to be a perfect square. Right now we have x^{2} -10x and we can obtain -10x by adding -5x and -5x. That is, we can build the following perfect square: x^{2} -10x+25=(x-5) ^{2}

The “problem” with what we just did is that we added to what was given. Let’s put the expression together. We have 2( x-5) ^{2}-53 and when we multiply that out it does not give us what we started with. It gives us 2 x^{2} -20x+50-53=2 x^{2} -20x-3

So you see our expression is not right. It should have a -53 but instead has a -3. So to correct it we need to subtract another 50.

We do this as follows: 2(x-5) ^{2}-53-50 which gives us the final expression we seek:

2(x-5) ^{2}-103

If you multiply this out you will get the exact expression we were given. This means that:
a = 2
d = -5
e =  -103

We are asked for the sum of a, d and e which is 2 + (-5) + (-103) = -106


7 0
3 years ago
4−3(x−5)&gt;6x−17 Given
Alex777 [14]

Answer:

Answer

Step-by-step explanation:


4 0
3 years ago
My friends last question pls answer ASAP
Dafna11 [192]

Answer:

64

Step-by-step explanation:

just count the blocks!

6 0
3 years ago
Read 2 more answers
The Himalayas in Asia are the tallest mountains in the world. PLEASE HELP ME
Tanya [424]

Answer: the answer is d trust me

Step-by-step explanation:

4 0
3 years ago
Write 37 and 2/3% as a fraction in simplest form.<br> URGENT
Tems11 [23]

Answer:

101 2/3

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Help plz I need help
    11·1 answer
  • 4. If angle A and anlge B are both supplementary to Angle C and angle A is 70°,
    8·1 answer
  • What is 1/4 + 1/2? hurry i need help
    8·2 answers
  • Chloe spent $69 and now has no money left. She had before her purchase. She had $ before her purchase. can you please help me wi
    13·1 answer
  • The floor of a round hut has a diameter of 4 meters. What is the floor's circumference? Use 3.14 for ​.
    11·1 answer
  • Cal is measuring temperature changes in four substances over different time periods as part of a school project. Which data show
    10·1 answer
  • Solve for y.<br><br> x + r = yt
    12·2 answers
  • What’s the answer for 35/(16-32)• 2
    15·1 answer
  • Wirte an inequality to comepare the ratios 2/4 and 5/6​
    14·1 answer
  • Part A: Write an equivalent system of equations.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!