Question

(x+2)la puterea 2+2(2x-3)(2x+3)-(3x-2) la puterea 2

Answer 1

${(x + 2)}^{2} + 2(2x - 3)(2x + 3) - {(3x - 2)}^{2}$

$= {x}^{2} + 4x + 4 + 2 (4 {x}^{2} - 9) - (9 {x}^{2} - 12x + 4)$

$= {x}^{2} + 4x + 4 + 8 {x}^{2} - 18 - {9x}^{2} + 12x - 4$

$= 16x - 18$