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
serious [3.7K]
3 years ago
15

1. Add or subtract. Show your work for each problem.

Mathematics
1 answer:
Aleks04 [339]3 years ago
4 0
Hi there!

a. 8x^2 - 1
(x^2 - 4x + 5) + (7x^2 + 4x - 6)
= x^2 + 7x^2 - 4x + 4x - 1
= 8x^2 - 1

b. 5x^2 + 7x - 7
(7x^2 + 4x - 6) - (2x^2 - 3x + 1)
= 7x^2 + 4x - 6 - 2x^2 + 3x - 1
= 7x^2 - 2x^2 + 4x + 3x - 6 - 1
= 5x^2 + 7x -7

Hope this helps!
You might be interested in
|j|=|2j+3| please help me
Softa [21]
Simplifying
j = (2j + 3)

Reorder the terms:
j = (3 + 2j)

Remove parenthesis around (3 + 2j)
j = 3 + 2j

Solving
j = 3 + 2j

Solving for variable 'j'.

Move all terms containing j to the left, all other terms to the right.

Add '-2j' to each side of the equation.
j + -2j = 3 + 2j + -2j

Combine like terms: j + -2j = -1j
-1j = 3 + 2j + -2j

Combine like terms: 2j + -2j = 0
-1j = 3 + 0
-1j = 3

Divide each side by '-1'.
j = -3

Simplifying
j = -3
8 0
2 years ago
If the degree for the polynomial function f(x) is 7 and below is the graph of f(x), then how many zeroes are there total? How ma
yanalaym [24]
There would be 1 cause
8 0
2 years ago
The running trail in the local park is 2.826 miles long. If the park board were planning to extend the trail by 1.46 miles, what
eimsori [14]
Extend means to increase, add length to it, ADD.
       2.826
+    1.46
--------------
       4.286

5 0
3 years ago
Please help. will mark brainliest
Otrada [13]

Answer: AC = A'C'

Then you can use the hypotenuse leg theorem to say that the two triangles are similar

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
How do you expand expand (6 x)6.?
melamori03 [73]
The bracetes means ×
6×6=36 and there is more x
(6x)6=36x
8 0
3 years ago
Other questions:
  • The sum of 3 consecutive even numbers is 66. write an equation and solve to find the smallest even number.
    6·1 answer
  • What is the answer to ax-8b=c
    8·1 answer
  • There are two thousand girls and one thousand boys at a university.For every girl with glasses there are two boys who were glass
    13·1 answer
  • Solve x2 - 3x = 28 by factoring.
    7·2 answers
  • Please help I appreciate it
    5·2 answers
  • Aband has 36 members . they are arranged in to 6 equal rows. how many band members are in each row
    14·2 answers
  • Can I have some help
    10·2 answers
  • Please help with this geometry question ASAP. Also please show work
    10·1 answer
  • If two sides of a rectangle are 5 units and 9 units, what is the perimeter?
    10·1 answer
  • Find the inverse for each relation:
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!