Question

1.Wykonaj mnożenie .

a) (x+2)(y+1)

b) (2a+1)(3-b)

c) (a-1)(a do potegi 2 -b do potegi 2 )

d) (2x-1)(y-3)

e) (x-y)(a-b+9)

f) (k do potegi 2 -2k+2)(t+8)

Answer 1

a)xy+x+2y+2

b)6a-2ab+3-b

c)a^3-ab^2-a^2+b^2

d) 2xy-6x-y+3

e)xa-xb+9x-ay+by-9y

f)tk^2+8k^2-2tk-16k+2t+16