1. Wykonaj mnożenie
a) (a+2) × (a+3)=
b) (x-4) (x+4)=
c) (3-8x) × (3+8x)=
d) (a-6) × (3a+4)=
e) (xy+3y) × (4xy-5y)=
f) 2×(3a[tex]b^{2}[/tex]-4) × (3ab^2+4)=
g) (x+y+3) × (2x-y)=
h) (3x-1) × (3x+1) (2-x)=
2. Wykonaj działania.
a) (3-[tex]\sqrt{3}[/tex]) × (2-3[tex]\sqrt{3}[/tex])=
b) 5[tex]x^{2}[/tex] × (3x+2) - [tex]\frac{1}{2}[/tex]x × (10[tex]x^{2}[/tex]+20)=
c) [2a(b+a)] × [(a+b)+ 2a]=