Question

(2x+5)² find the following by using identity-1​

Answer 1

Answer:

4x² + 25 + 20x

Step-by-step explanation:

(2x+5)²

(a + b)² = a² + b² + 2ab

a = 2x, b = 5

(2x)² + (5)² + 2(2x)(5)

4x² + 25 + 20x