Question

Раскрыть скобки:
(х-2)(х=3)

(х-4)(х-9)

(х-5)(х=2)

(х-2)(х+3)

Answer 1

x2+3x-2x-6=x2+x-6

x2-9x-4x+36=x2-13x+36

x2+2x-5x-10=x2-3x-10

x2+3x-2x-6=x2+x-6

Answer 2

(х-2)(х-3)=х^2-3х-2х+6=х^2-5х+6
(х-4)(х-9)=х^2-9х-4х+36=х^2-13х+36
(х-5)(х-2)=х^2-2х-5х+10=х^2-7х+10
(х-2)(х+3)=х^2+3х-2х-6=х^2+х-6