Question

3- - Sendo A = (2x - 3)2 e B = (2x + 3)2, o valor de A - B é:
(a) o
(b) 72x2 +54
(c) 8x2
(d) 72x2 – 24x – 18​

Answer 1

${(2x - 3)}^{2} = 4 {x}^{2} - 12x + 9 \\ {(2x + 3)}^{2} = 4 {x}^{2} + 12x + 9 \\ \\ a - b = 4 {x}^{2} - 12x + 9 - 4 {x}^{2} - 12x - 9 \\ - 24x$

Answer 2

2(-2x + 3+3) e o valor bruto que seria V