Question

Resuelve la sig ecuacion utilizando la factorización

4x² + (10 + 12) 2x + 10x 12 = 224

Answer 1

4x^2+20x+24x+120=224
4x^2+44x+120-224=0
4x^2+44x-104=0
x^2+11x-26=0
resolvemos x1=-13    x2=2

Answer 2

4x² + (10 + 12) 2x + 10x 12 = 224

4x² + (22) 2x + 120 = 224

4x² + 44x + 120 -224 = 0

4x² + 44x - 104 = 0  entre 4

x² + 11x - 26 = 0  

x            +13
x             -2

13x-2x = 11x

(x+13)(x-2) = 0

x+13 = 0       x-2 = 0
x = -13          x = 2

CS = (-13; 2)