Question

Ayudaaaaaaaaaaaaaaa !!!!!!!!!!

Answer 1

Respuesta:

a)

$x^{2} - 7x + 12= 0\\ x^{2} - 3x- 4x + 12 = 0\\x ( x - 3) * ( x - 4 ) = 0\\x_{1} = 3 \\x_{2} = 4$

b)

$x^{2} - 9x + 18 = 0\\x^{2} - 3x - 6x + 18 = 0\\x( x - 3b ) - 6 ( x - 3 ) = 0\\( x - 3 ) * ( x - 6 ) = 0\\x_{1} = 3\\x_{2} = 6$

c)

$2x^{2} - 8x + 8 = 0\\x^{2} - 4x + 4 = 0 \\(x - 2 )^{2} = 0 \\x-2=0 \\x= 2$