X2-7x+12=0 X2+7x-18=0 Дискреминатн

Question

X2-7x+12=0 X2+7x-18=0 Дискреминатн

Answer 1

Х^2-7х+12=0
D= b^2-4ac
D=49-48=1
x1=(-7+1)/2=-6/2=-3
x2=(-7-1)/2=-8/2-4

x^2+7x-18=0
D=49+72=121
x1=(-7+11)/2=4/2=2
x2=(-7-11)/2=-18/2=-9