Question

(x-5)²+4=x²-7x
A) 29/3
B) 27/7
C)25/3
D) 45/8​

Answer 1

Explicación paso a paso:

$( {x - 5)}^{2} + 4 = {x}^{2} - 7x \\ {x}^{2} - 10x + 25 + 4 = {x}^{2} - 7x \\ {x}^{2} - 10x + 25 + 4 - {x}^{2} + 7x = 0 \\ - 3x + 29 = 0 \\ - 3x = 0 - 29 \\ - 3x = - 29 \\ x = \frac{ - 29}{ - 3} \\ x = \frac{29}{3}$