Question

x^2+12x-64=0 решите пож.

Answer 1

$x^{2} +12x-64=0 \ D= 12^{2} +4*64=144+256=400 \ left { {{ x_{1} = frac{-12+20}{2} =frac{8}{2} =4} \ atop {x_{2} = frac{-12-20}{2} =frac{-32}{2} =-16}} right.$

Answer 2

спасибо

Answer 3

Не за что)

Answer 4

$x^{2} +12x-64=0 \ D=144+256=400 \ sqrt{D} =20 \ x_{1} = frac{-12+20}{2} = frac{8}{2} =4 \ x_{2} = frac{-12-20}{2} =- frac{32}{2} =-16$