Question

10 points

Find the product of (x + 5)(x - 5). (1 point)

x² - 10x + 25
x² + 10x + 25
Ox²-25
Ox²+25


Find the product of (2x + 5y)(2x - 5y). (2 points)

4x² - 20xy + 25y²
4x²+20xy + 25y²
4x²+25y²
4x²-25y²

Answer 1

Solution in attached photo.

Explanation:

Solution

To expand the brackets, we will use the rainbow expansion method.