Các câu hỏi tương tự
tìm x
1) (3x-2)(9x^2+6x+4)-(2x-5)(2x+5)=(3x-1)^3-(2x+3)^2+9x(3x-1)
2) (2x+1)^3-(3x+2)^2=(2x-5)(4x^2+10x+25)+6x(2x+1)-9x^2
. Tìm x, biết:
a) 6x.(x – 5) + 3x.(7 – 2x) = 18 b) 2x.(3x + 1) + (4 – 2x).3x = 7 c) 0,5x.(0,4 – 4x) + (2x + 5).x = -6,5 | d) (x + 3)(x + 2) – (x - 2)(x + 5) = 6 e) 3(2x - 1)(3x - 1) – (2x - 3)(9x - 1) = 0 |
tìm x biết
a) (6x-3) (2x+4) + (4x-1) (5-3x) = -21
b) 6x (3x+5) - 2x (9x-2) + (17-x) (x-1) + x (x-18) =0
c) (15-2x) (4x+1) - (13-4x) (2x-3) - (x-1) (x+2) + x2=52
d) (8x-3) (3x+2) - (4x+7) (x+4) = (2x+1) (5x-1) - 33
1. TÍNH
a.(3x+2)-(3x-1)(3x+1)
b.(1/2x-1)2-(1/4x+5)(1/2x-3)
2. TÌM X
a.(2x+5)2-2x(2x-1)=6(x+1)
b.(1/2x-3)2-(1/4x+3)(x+1)=x-5
c. 9x2-6x=8
8 tháng 9 2021 lúc 14:22
Bài 4: Tìm x, biết:
a) 3(2x – 3) + 2(2 – x) = –3 ; b) x(5 – 2x) + 2x(x – 1) = 13 ;
c) 5x(x – 1) – (x + 2)(5x – 7) = 6 ; d) 3x(2x + 3) – (2x + 5)(3x – 2) = 8 ;
e) 2(5x – 8) – 3(4x – 5) = 4(3x – 4) + 11; f) 2x(6x – 2x 2 ) + 3x 2 (x – 4) = 8.
làm phép chia :
a) (x^4 -2x^3 + 2x -1) : (x^2 - 1)
b) (x^3 -8) : (x^2 + 2x +4)
c) (x^6 - 2x^5 + 2x^4 + 6x^3 - 4x^2)n: 6x^2
d) (-2x^5 + 3x^2 - 4x^3) :2x^2
e) (15x^3 - 10x^2 + x - 2) : (x - 2)
f) (2x^4 - 3x^3 - 3x^2 + 6x - 2) : (x^2 - 2)
Phân tích các đa thức sau thành nhân tử : x2-2x-4y2-4yx^4 + 2x^3 - 4x -43x^2-3y^2 -2(x-y)^2x^3 - 4x^2 - 9x + 36(x-1)(2x+1)+3(x-1)(x+2)(2x+1)(6x+3)-(2x-5)(2x+1)(x-5)^2+(x+5)(x-5)-(5-x)( 2x+1)(3x-2)(4x-3) - (2-3x)(x-1) - 2(3x-2)(x+1)
Xem chi tiết
Tìm x
a) 3x(4x - 3) - 2x(5 - 6x) = 0
b) 5(2x - 3) + 4x(x - 2) + 2x(3 - 2x) = 0
c) 3x(2 - x) + 2x(x - 1) = 5x(x + 3)
d) 3x (x + 1) - 5x(3 - x) + 6(x^2 + 2x + 3) = 0
tìm x:
a) 3x(2x+3)-(2x+5)(3x-2)=8
b) 4x(x-1)-3(x^2-5)-x^2=(x-3)-(x+4)
c) 2(3x-1)(3x-1)-(2x-3)(9x-1)-3=3
d) (3x-1)(2x+7)-(x+1)(6x-5)=(x+2)-(x-5)
giúp mk nhé mk có 5 tài khoản mk sẽ tick hết cho