Question

Wykonaj mnozenie

a) (x+2) (y+3)

b) (2a-b) (b+1)

c) (2a-3b)(3b+3)

d) (2x-4y)(3x-2)

e) (-2a+b)(6a-4)

f) (4-3a (-2b+5)

g (x+y) (a-b+c)

h) (x-y)(a+b-c)

i (x-y) (a-2b-1

Answer 1

a) (x+2) (y+3)=xy+3y+2y+6

b) (2a-b) (b+1)=2ab+2a-b^2-b

c) (2a-3b)(3b+3)=6ab+6a-9^2-9b

 

d) (2x-4y)(3x-2)=6x^2-4x-12xy+8y

e) (-2a+b)(6a-4)=-12a^2+8a+6ab-4b

f) (4-3a (-2b+5)=-8b+20+6ab-15a

g (x+y) (a-b+c)=xa-xb+xc+ya-yb+yc

h) (x-y)(a+b-c)=xa+xb-xc-ya-yb+yc

i (x-y) (a-2b-1=ya-2yb-y+ya-2ay+y