Răspuns:
[tex](4x - 7)(4x + 7) = 16 {x}^{2} - 49[/tex]
Formula:
[tex](x - y)(x + y) = {x}^{2} - {y}^{2} [/tex]
Succes! ♡︎♥︎♡︎
[tex]\it (4x-7)(4x+7)=(4x)^2-7^2=16x^2-49[/tex]
Am folosit formula:
(a - b)(a + b) = a² - b²
