Question

simplify : (x+2)2 - (x-7)2​

Answer 1

Use the formula of a+b whole square & a-b whole square

Answer 2

Step-by-step explanation:

${(x + 2)}^{2} - {(x - 7)}^{2}$

${x}^{2} + 4x + 4 - {x}^{2} - 14x + 49$

$2 {x}^{2} - 10x + 53$