Question

(2×+5)² by using identity-1

Answer 1

Answer:

4x^2+20x+25

Step-by-step explanation:

(2x)^2+2*2x*5+(5)

=4x^2+20x+25

Answer 2

Answer:

Evaluate using suitable identities :

(i) (52)²

Using the identity

=> (a+b)² = a² + 2ab + b²

(52)² = (50+2)²

= (50)² + 2×50×2 + (2)²

= 2500 + 200 + 4

= 2704