oblicz :
(3x+1)(2x-2) =
(6x+4)(2x-1)=
3(5a+8)-4(2a+1)-2
(3x+1)(2x-2)=6x²-6x+2x-2=6x²-4x-2
(6x+4)(2x-1)=12x²-6x+8x-4= 12x²+2x-4
3(5a+8)-4(2a+1)-2=15a+24-8a-4-2=7a+18
1) (3x+1)(2x-2)=6x²-6x+2x-2=6x²-4x-2
2) (6x+4)(2x-1)=12x²-6x+8x-4=12x²+2x-4
3) 3(5a+8)-4(2a+1)-2=15a+24-8a-4-2=7a+18
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(3x+1)(2x-2)=6x²-6x+2x-2=6x²-4x-2
(6x+4)(2x-1)=12x²-6x+8x-4= 12x²+2x-4
3(5a+8)-4(2a+1)-2=15a+24-8a-4-2=7a+18
1) (3x+1)(2x-2)=6x²-6x+2x-2=6x²-4x-2
2) (6x+4)(2x-1)=12x²-6x+8x-4=12x²+2x-4
3) 3(5a+8)-4(2a+1)-2=15a+24-8a-4-2=7a+18