Question

Wykonaj mnożenie i zredukuj wyrazy podobne

(3n-2)(n-6)=

(x+2y+3)(x-2)=

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

Answer 1

(3n-2)(n-6)=3n²-18n-2n+12=3n²-20n+12

 

(x+2y+3)(x-2)=x²-2x+2xy-4y+3x-6=x²+x+2xy-4y-6

 

(2a-b+c)(2a-3b)=4a²-6ab-2ab+3b²+2ac-3bc=

4a²+3b²-8ab+2ac-3bc

Answer 2

(3n-2)(n-6)= 3n²-18n-2n+12= 3n²-20n+12

(x+2y+3)(x-2)= x²-2x+2xy-4y+3x-6=x²+x+2xy-4y

(2a-b+c)(2a-3b)=4a²-6ab-2ab+3b²+2ac-3bc=4a²-8ab+3b²+2ac-3bc