Thực hiện phép tính:
Thực hiện phép tính:
a.2x.(x^2 - 7x - 3)
b.(-2x^3 + 3/4 y^2 - 7xy). 4xy^2
c.(x + 3)(x - 3) - (x - 2)(x + 5)
d.(5x - 1).(x + 3) - (x - 2).(5x- 4)
g.(x + 1)(x^2 - x +1) - (3 + x)(9 - 3x +x^2)
h. (2x + 3)(4x^2 - 6x + 9) 2(4x^3 - 1)
i.(x + 2)(3x - 1) (3x + 1)
Giup mik vs mik sắp pk nộp bài rùi
a.2x.(x^2 - 7x - 3)
b.(-2x^3 + 3/4 y^2 - 7xy). 4xy^2
c.(x + 3)(x - 3) - (x - 2)(x + 5)
d.(5x - 1).(x + 3) - (x - 2).(5x- 4)
g.(x + 1)(x^2 - x +1) - (3 + x)(9 - 3x +x^2)
h. (2x + 3)(4x^2 - 6x + 9) 2(4x^3 - 1)
i.(x + 2)(3x - 1) (3x + 1)
Giup mik vs mik sắp pk nộp bài rùi