`3xx(5x + 2/3)^2=4/3`
`=>(5x + 2/3)^2= 4/3 : 3`
`=>(5x + 2/3)^2= 4/3 xx 1/3`
`=> (5x + 2/3)^2= 4/9`
`=> (5x + 2/3)^2=(2/3)^2`
`o TH1`
`5x+2/3 = 2/3`
`=> 5x=2/3-2/3`
`=>5x=0`
`=>x=0`
`oTh2`
`5x+2/3 = -2/3`
`=> 5x=-2/3 - 2/3`
`=> 5x= -4/3`
`=>x=-4/3 : 5`
`=>x= -4/3 xx 1/5`
`=>x= -4/15`
Tìm x biết:
a) 4(18-5x) - 12(3x-7) = 15(2x-16) - 6(x+14)
b) 5(3x+5) - 4(2x-3) = 5x+3(2x+12)+1
c)2(5x-8) - 3(4x-5) = 4(3x-4) + 11
d) 5x-3 {4x-2 [4x-3(5x-2)]}=182
3/4-(3/5x+2)=(1/3-2/5x)+1/3
p(x)=3x^2+7+2x^4-3x^2-4-5x+2x^3
Q(x)=-3x^3+2x^2-x^4+x+x^3+4x-2+5x^4
tính p(x) + Q(x)
Cho 2 đa thức: \(A\left(x\right)=3x^3-4x^4-2x^3+4x^4-5x+3\)
\(B\left(x\right)=5x^3-4x^2-5x^3-4x^2-5x-3\)
a, Thu gọn rồi sắp xếp theo lũy thừa giảm dần của biến
b, Tính A(x) + B(x) ; A(x) - B(x)
Mik cần gấp
Bài : Rút gọn
1) (3x - 5).(7-5x)-(5x+2).(2-3x)
2) (3x2+5x-2).(2x2-4x+3)
3) (3x2+5x-2).(2x2-4x+3)
4)4(2x3+x)-(2x-1)(4x2+3x+1)
5) 2x(x+3)-(x-5).(7+2x)
Nhanh + đúng auto tick :Đ!
Rút gọn các biểu thức :
a. A = ( 5x - 1) + 2( 1 - 5x).( 4+ 5x ) + ( 5x+ 4 )^2
b. B = ( x - y )^3 + ( y + z )^3 + ( y - x )^3 - 3xy( x+ y )
Tính:
a) (x^5 +12x^2 + 5x) : (3x)
b) (-5x^4 + 15x^3 - 18x) : (-5x)
c) (-x^6 +5x^4 - 2x^3) : 0,5x
Thực hiện phép tính
a) (2x^4-5x^2+x^3-3-3x):(x^2-3) b) (x^5+x^3+x^2+1):(x^3+1)
c) (2x^3+5x^2-2x+3):(2x^2-x-1) d) (8x-8x^3-10x^2+3x^4-5):(3x^2-2x+1)
Mik cần gấppp
thu gọn đa thức 2x^3+2x^5-5x^7-7x^2-11x^3+2, 5x^4-9+4, 2x^2+1, 5x^4+13x^8
Tìm x biết :
a, 4.(18 - 5x) - 12.(3x - 7) = 15.(2x - 16) - 6(x + 14)
b, 5.(3x + 5) - 4.(2x - 3) = 5x + 3.(2x + 12) + 1
c, 2.(5x - 8) - 3.(4x - 5) = 4.(3x - 4) + 11
d, (3x + 2)(2x + 9) - (x + 2)(6x + 1) = (x + 1) - (x - 6)
e, (8x - 3)(3x + 2) - (4x + 7)(x + 4)= (2x + 1)(5x - 1) - 33
