Question

(X-10)2+×(x+17)=104
Me ajude por favor

Answer 1

(x-10)2+x(x+17)=104

2x-20+x²+17=104

X²-2x=104-17+20

X²-2x=107

X²-2x-107=0

Delta = b²-4ac

D= (-2x)² -4.x². - 107

D= -2x²-4x².-107

D=-6x².-107

D= 642x²

$x = \frac{2x + - \sqrt{642 {x}^{2} } }{2 \times {x}^{2} } = \frac{2x + - 642x}{ {2x}^{2} }$

$x1 = \frac{2x + 642x}{ {2 x}^{2} } = \frac{644x}{ {2x}^{2} }$

$x2 = \frac{2x - 642x}{ {2x}^{2} } = \frac{ - 640x}{ {2x}^{2} }$