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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
Additive Inverse of a Polynomial

Example: Find the additive inverse B of A, where A = 3x2+7x+2.

Solution: To obtain the additive inverse B of A, write the additive inverses of each of the coefficients of its terms. That is -3, -7, -2, are the coefficients of the terms in the polynomial B respectively.

Therefore, B = -3x2-7x-2.

Verification:
A+B = (3x2+7x+2)+(-3x2-7x-2)
= (3x2-3x2)+(7x-7x)+(2-2)
= (3-3)x2+(7-7)x+(2-2)
= 0.x2+0.x+x
= 0


Directions: Solve the following problems. Also write at least ten examples of your own.
Q 1: Find the additive inverse of (9x3-7x+3).
-9x3+7x-3
9x3-7x-3
-9x3-7x-3
9x3+7x-3

Q 2: Find the additive inverse of (7x2+3x+3).
-7x2+3x-3
-7x2+3x+3
7x2+3x-3
-7x2-3x-3

Q 3: Find the additive inverse of (-3x2-7x+2).
3x2-7x-2
-3x2+7x-2
-3x2-7x-2
3x2+7x-2

Q 4: Find the additive inverse of (6x2-3x+3).
6x2-3x-3
6x2+3x-3
-6x2+3x-3
-6x2-3x-3

Q 5: Find the additive inverse of (7x3-9x+3).
-7x3-9x-3
7x3-9x-3
7x3+9x-3
-7x3+9x-3

Q 6: Find the additive inverse of (9x2-3x-9).
9x2-3x+9
-9x2-3x+9
-9x2-3x-9
-9x2+3x+9

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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