Question

Ecuaciones cuadraticas

(x-5) alcuadrado =144

Formula porfavor.
Gracias.

Answer 1

formula
x = (-b $+- \sqrt (b ^{2} - 4ac)$)/ 2a

solucion
(x - 5)^2 = 144
x^2 -10x + 25 = 144
x^2 - 10x + 25 - 144 = 0
x^2 - 10x - 119 = 0
a = 1     b = -10    c = -119

x = (-b $+- \sqrt (b ^{2} - 4ac)$)/ 2a
x = $(-(-10) +- \sqrt ((-10) ^{2} - 4(1)(-119))$) / 2(1)
x = $(10 +- \sqrt (100 + 476) )$ / 2
x = (10 +- 24) / 2
$x_{1}$ = (10 + 24) / 2 = 34/2 =17
$x_{2}$ = (10 - 24) / 2 = -14 / 2 = -7