Odpowiedź :
4a(5b- 3 ) = 20ab - 12a
(3x+ 2 )(4y-7)=12xy - 21x +8y-14
8x²-4x²y+12xy=4xy( [2x/y] - x + 3)
(3x+ 2 )(4y-7)=12xy - 21x +8y-14
8x²-4x²y+12xy=4xy( [2x/y] - x + 3)
4a(5b-3)=20ab-12a
(3x+2)(4y-7)=12xy-21x+8y-14
8x²-4x²y+12xy=4xy(-x+3)+8x²
(3x+2)(4y-7)=12xy-21x+8y-14
8x²-4x²y+12xy=4xy(-x+3)+8x²