Question

simplify (i) (a² - b²) (ii) (2x + 5)² - (2x-5)²​

Answer 1

Answer:

Step-by-step explanation:

1)(a+b)(a-b)

2)(2x+5+2x-5)(2x+5-2x+5)

Answer 2

Answer:

a²-b²=(a+b) (a-b)

2). (2x+5)²=4x²+20x+25

-(2x-5)²= -(4x²-20x+25)

-4x²+20x-25

=40x