Question

(4y^3 − 5)^2 [4.6] Multiply.
Thank you!

Answer 1

Hint: use (a + b)^2 = a^2 + 2ab + b^2

Here's an example to help you.

(x^2 - 3)^2
= (x^2)^2 + 2(x^2)(-3) + (-3)^2
= x^4 - 6x^2 + 9

Answer 2

Or use (a - b)^2 = a^2 - 2ab + b^2