Question

у=х²-7х+10

помогите решить

 

Answer 1

х²-7х+10=0
d=49-4*1*10=9
x1=(7+3)/2=5
x2=(7-3)/2=2
x1=5                                       x2=2
y1=25-35+10=0                   y2=4-14+10=0

Answer 2

d=49-40=9=3*3
X1=7+3/2=5
x2=7-3/2=2