Question

7. Simplify : 2x3- (x2 - y2) + 3x3 – x2 + 5y2​

Answer 1

Answer:

Step-by-step explanation:

9 - 4x 2 = 3 2 - (2x) 2 = (3 - 2x)(3 + 2x)

As a practice, multiply (3 - 2x)(3 + 2x) to obtain the given expression.

Answer 2

Step-by-step explanation:

ANSWER IN THE ATTACHMENT!