1) x(x-8)=0 2) (y-5)(y+11)=0 3) z62-3z=0 4) t^2+12t=0 5) -2x^2=13x=0 6) -x^2+25=0

Question

1) x(x-8)=0 2) (y-5)(y+11)=0 3) z62-3z=0 4) t^2+12t=0 5) -2x^2=13x=0 6) -x^2+25=0

Comments

а как 3)?

Answer 1

1- x^2-8x=0 , x(x-8)=0 x=0,8
2 - Y^2 - 6y - 55=0 y=11 y2=5
3-? 62z?
4- t=0,t=-12
5- x=-13,x=0
6- x=5,-5