Question

Find the following special products (4x²-5y)(4x²+5y)

Answer 1

(16x^4) - (25y^2)

Explanation:

(4x²-5y)(4x²+5y)

Formula: (a - b)(a + b) = a² - b²

a = 4x² b = 5y

We Have:

(4x²)² - (5y)² = (16x^4) - (25y^2)

So, the answer is (16x^4) - (25y^2)