Question

Oblicz:

a) x (x²+x+1)

b)3z (z+z³+3z²)

c) -a (2a+3a²)

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

Answer 1

a. x^3+x^2+x

b.3z^2+3z^4+9z^3

c.-2a^2-3a^3

d.-4ab-4b^2-4bc

Answer 2

a) x(x+x+1)=++x

b) 3z(z++)=++

c) -a(2a+)=

d) -2b(2a+2b+2c)=-4ab--4bc