\(a,\Rightarrow8x^2-16x-4x+5-8x^2+10x-5x=0\\ \Rightarrow-15x=-5\Rightarrow x=\dfrac{1}{3}\\ b,\Rightarrow9x^2-16-9x^2+12x-4=5\\ \Rightarrow12x=25\\ \Rightarrow x=\dfrac{25}{12}\)
Tìm x, biết:
a) (2x+3)(x-4)+(x-5)(x-2)=(3x-5)(x-4)
b) (8x-3)(3x+2)-(4x+7)(x+4)=(2x+1)(5x-1)
a) (2x+3)(x-4)+(x-5)(x-2)=(3x-5)(x-4)
b)(8x-3)(3x+2)-(4x+7)(x+4)=(2x+1)(5x-1)
c)(\(^{x^2}\)-5)(x+2)+5x=2\(^{x^2}\)+17
d)(\(^{x^2}\)-x+1)(x+1)-\(x^3\)+3x=15
19 Tìm x, biết
a) (x+2)(x+3)-(x-2)(x+5)=0 ; b) (2x+3)(x-4)+(x-5)(x-2)=(3x-5)(x-4)
c) (8-4x)(x+2)+4(x-2)(x+1)=0 ; d) (2x-3)(8x+2)=(4x+1)(4x-1)-3
Tìm x, biết:
a) \(\left(2x+3\right)\left(x-4\right)+\left(x-5\right)\left(x-2\right)=\left(3x-5\right)\left(x-4\right)\)
b) \(\left(8x-3\right)\left(3x+2\right)-\left(4x+7\right)\left(x+4\right)=\left(2x+1\right)\left(5x-1\right)\)
c) \(\left(3x-5\right)\left(7-5x\right)-\left(5x+2\right)\left(2-3x\right)=4\)
2 . ( x³ -1)-2x²(x+2x⁴) +(4x⁵+4)x=6. 3. (X²-4x+16)(x+4)-x(x+1)(x+2)+3x²= 0 4 . ( 8x +2 ) (1-3x) + ( 6x-1)(4x-10) =-50 Đề bài là tìm x nha mn Nhanh giúp mik vs
1. Tìm x biết:
a. ( 8x - 3 ).( 3x + 2 ) - ( 4x + 7 ).( x + 4 ) = ( 2x + 1 ).( 5x - 1 )
b. 4.( x - 1 ).(x + 5 ) - ( x + 2 ).( x + 5 ) = 3.( x - 1 ).( x + 2 )
tính
\(\left(x^2-3x+2\right)\left(-2x-5\right)\)
\(\left(3x^4-8x^3-10x^2+8x-5\right):\left(3x^2-2x+1\right)\)
Tìm x biết
1) x3 - 9x2 + 27x = -8
2) (2x - 1)3 - 4x2 (2x - 3) = 5
3) (x + 3)2 + x(3x + 1)2 + (2x + 1)(4x2 - 2x + 1) - 3x2 = 54
4) (x + 1)3 - (x - 1)3 - 6(x - 1)2 = -10
5) 8x3 - 60x2 + 150x - 125 = 4
(8x-3)(3x+2) - (4x+7)(x+4) = 2(2x+1)(5x-1)
