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Online Quiz (Worksheet A B C D)

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Grade 7 - Mathematics
2.3 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.

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).

Question 2: This question is available to subscribers only!

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