Question

Упростите выражения x2-3(x-2)+2x-11=5

Answer 1

Х2-3Х+6+2Х-11=5
Х-5=5
Х=5+5
Х=10

Answer 2

x2-3x+6+2x-11=5
x2-x-10=0
D=1+40=41
x{1}=(1-r(41))/2

x{2}=(1+r(41))/2
(x-(1-r(41))/2)(x-(1+r(41))/2)=0