Question

calculand (4×-7( (4×+7) obținem... ​

Answer 1

Răspuns:

$(4x - 7)(4x + 7) = 16 {x}^{2} - 49$

Formula:

$(x - y)(x + y) = {x}^{2} - {y}^{2}$

Succes! ♡︎♥︎♡︎

Answer 2

$\it (4x-7)(4x+7)=(4x)^2-7^2=16x^2-49$

Am folosit formula:

(a - b)(a + b) = a² - b²