mn ơi ???? làm hộ em bài này nha…cảm ơn trc ạ!.hơi dài 1 tí mong ace làm hộ ạ….
a. 4x (3x² – 5x + y)
b. 3x (5/6 xy – 4x -5)
c. -4x (3x – 1)
d. (3x – 1) (4x + 2)
e. (2x – 5 ) ( 3x – 2)
f. (4x – 5) (x² – 2x – 3)
g. (3xy – 5) (4x – y)
h. (2x – 3)²
l. (3x + 4)²
m. (2x + 3)³
mn ơi ???? làm hộ em bài này nha…cảm ơn trc ạ!.hơi dài 1 tí mong ace làm hộ ạ…. a. 4x (3x² – 5x + y) b. 3x (5/6 xy – 4x -5) c. -4x (3x – 1) d. (3
By Daisy
a. 4x (3x² – 5x + y)
= 12x³-20x²+4xy
b.3x (5/6 xy – 4x -5)
=3/2x²y-12x²-15x
c.-4x (3x – 1)
=-12x²+4x
d.(3x – 1) (4x + 2)
=12x²+6x-4x-2
e(2x – 5 ) ( 3x – 2)
=6x²-4x-15x+10
f.(4x – 5) (x² – 2x – 3)
=4x³-8x²-12x-5x²+10x+15
g.(3xy – 5) (4x – y)
=12x²y-3xy²-20x+5y
h. (2x – 3)²
=4x²-12x+9
I(3x + 4)²
=9x²+24x+16
m. (2x + 3)³
=8x³+96x²+54x+27
vote 5 sao nha
a. 4x(3x²-5x+y)=12x³-20x²+4xy
b. 3x(5/6xy-4x-5)=5/2x²y-12x²-15x
c. -4x(3x-1)=-12x²+4x
d. (3x-1)(4x+2)=12x²+6x-4x-2
12x²+2x-2
e. (2x-5)(3x-2)=6x²-4x-15x+10
6x²-19x+10
f. (4x-5)(x²-2x-3)=4x³-8x²-12x-5x²+10x+15
=4x³-13x²-2x+15
g. (3xy-5)(4x-y)=12x²y-3xy²-20x+5y
h. (2x-3)²=4x²-12x+9
i. (3x+4)²=9x²+24x+16
m. (2x+3)³=8x³+36x²+54x+27