Question

Wylac z wspolny czynnik przed nawias 5x(4x+2) 2y(z-3)+z-3 7z(y+5)-y-5 3t(t-1)+(t-1)x6 8a(a+b*)-8b(a+b*)+a+b -9a(4a-1)+18a*(1-4a)

Answer 1

5x(4x+2)=20x²+10x= 10x(2x=1)

2y(z-3)+z-3=2yx-6z+z-3

7z(y+5)-y-5=7yz+35-y-5

3t(t-1)+(t-1)x6=3t²-3t+6tx-6x=3(t²-t+2tx-2x)

8a(a+b*)-8b(a+b*)+a+b=8a²+8ab-8ab-8b²+a+b=8a²-8b²+a+b

-9a(4a-1)+18a*(1-4a)==36a²+9a+18a-72a=36a²-45a=9a(4a-5)