Các câu hỏi tương tự
a.(3x-1)3 - (3x+1)3
b.(1+3x)3 - (1-3x)3
c.(1+3x)3 - (1-3x).(1+3x)-(1-3x)3
Tính :
B=(x-3)3-(x+3).(x2-3x+9)+(3x-1).(3x+1)
C=(3x+2)3-18x.(3x+2)+(x-1)3-28x3+3x.(x-1)
kết quả của phép nhân 3x(x^2+2x-1) là:
A.3x^3+5x^2-3x
B.3x^2+6x^3-3x
C.3x^3-3x^2+6x
D.3x^3+6x^2-3x
B=(x-3)3-(x+3).(x2-3x+9)+(3x-1).(3x+1)
C=(3x+2)3-11818x18x .(3x3x+2)+(x-1)3 - 28x3+3x.(x-1)
Rút gọn
(3x^3+3x+1)(3^3-3x+1)-(3x^3+1)^2
(3x^3 +3x+1)(3x^3-3x+1)-(3x^3+1)^2
giút gọn biểu thức sau
Tìm x:
a.x^3-3x^2-1=-3x-8
b.x^3+3x^2=26-3x
c.(2x-3)^3-9(x+2)^3=-x^3-99
d.(x+1)^3+2(x-2)^3=3x(x-1)^2-15
a. (2x - 3)3 - (3x - 2).(3x + 2)
b. (5a -3).(5a +3) - (2a - 1)3
c. (x +2)3 - 6.(2x - 3)2 +12.(x + 2) - 8
d. (3x - 2017)3 + 3.(3x - 2017)2 + 3.(3x - 2017) +1
HELP me
d) (3x – 5)(7 – 5x) – (5x + 2)(2 – 3x) = 4 g) 3(2x - 1)(3x - 1) - (2x - 3)(9x - 1) =0 j) (2x – 1)(3x + 1) – (4 – 3x)(3 – 2x) = 3 k) (2x + 1)(x + 3) – (x – 5)(7 + 2x) = 8 m) 2(3x – 1)(2x + 5) – 6(2x – 1)(x + 2) = - 6
P=(x+3)^3-x.(3x+1)^2+(2x+1)(4x^2-2x+1)-3x^2
Q=(x-3)^3-(x-3)(x^2+3x+9)+6(x+1)^2+3x^2