1)x²+16=10x
x²+16-10x=0
x²-10x+16=0
x²-2x-8x+16=0
x*(x-2)-8(x-2)=0
(x-2)*(x-8)=0
x=2
x=8
2)х²= -9-8
x²=-17
x∉R
1)x²+16=10x
x²+16-10x=0
x²-10x+16=0
x²-2x-8x+16=0
x*(x-2)-8(x-2)=0
(x-2)*(x-8)=0
x=2
x=8
2)х²= -9-8
x²=-17
x∉R