Question

X2 - 5x = 150 alguém me ajuda

Answer 1

$x^{2} -5x=150\\\\x^{2} -5x-150=0\\\\x=\frac{-b+/-\sqrt{b^{2}-4ac } }{2a} \\\\x=\frac{-(-5)+/-\sqrt{(-5)^{2}-4.1.-150 } }{2.1\\} \\\\x=\frac{5+/-\sqrt{25+ 600} }{2}$

$x=\frac{5+/-\sqrt{625} }{2}$

$x=\frac{5+/-25}{2}$

$x'=\frac{5-25}{2}$

$x'=\frac{-20}{2}$

x' = - 10

$x''=\frac{5+25}{2}$

$x''=\frac{30}{2}$

x'' = 15

S = { -10, 15 }