Respuestas

2012-04-22T01:22:13+02:00

(x+4)(x+4)= 2x(5x-1)-7(x-2)

 

(x+4)^{2} = 10x^{2} -2x-7x+14

 

x^{2} +8x+16= 10x^{2} -9x+14

10x^{2} -x^{2} -9x-8x-16+14=0

9x^{2} -17x-2=0

 

Factotizacion= 9 1  = -18+1=-17  

                      1-2

 

 

(9x+1)(x-2).. (despejamos "x" en ambos casos)

9x+1=0    9x=-1    x_{1} = \frac{-1}{9}

 x-2=0       x_{2} =2