Question

calcule os produtos
a) (x-5).(x-3)
b) (x-5).(x-2)
c) (x-5).(x+2)​

Answer 1

Resposta:

a) x^2-3x-5x+15=

= x^2-7x+15

b) x^2-2x-5x+10=

=x^2-7x+10

c) x^2+2x-5x-10=

=x^2-3x-10