Question

(2x^2 + y) (2x^2 - y)

Answer 1

To multiply these two brackets together, you simply multiply every term, so:
2x² × 2x² = 4x^4
2x² × -y = -2x²y
y × 2x² = 2x²y
y × -y = -y²
So when you add these terms you get 4x^4 - y² as your answer.

I hope this helps!

Answer 2

The answer is 4x^4−y^2