Question

Verify the following for a = 3 and b = 4.
a) (a + b)= a2 + 2ab + b?
b) (a - b)2 = a- 2ab + b2​

Answer 1

Step-by-step explanation:

1) a = 3 and b = 4

then, (a + b)²= a² + 2ab + b²

= (3)² + 2× 3× 4 + (4)²

= 9 + 24 + 16

= 49 Ans

2) a = 3 and b = 4

then, (a - b)²= a² - 2ab + b²

= (3)² - 2 × 3 × 4 + (4)²

= 9 - 24 + 16

= 9 + 16 - 24

= 25 - 24

= 1 Ans