Question

решите систему уравнений
y-x^2=17-8x
1/3 (у+1)+8х=х^2 +16

Answer 1

y-x^2=17-8x
y=17-8x+x^2
1/3(17-8x+x^2+1)+8x-x^2-16=0
18-8x+x^2+24x-3x^2-48=0
-2x^2+16x-30=0
x^2-8x=15=0
D=16-15=1
x1=4+1=5
x2=4-1=3