\(\Leftrightarrow\left(x+3\right)\left(3x-2+x-3\right)=0\)
\(\Leftrightarrow\left(x+3\right)\left(4x-5\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x=-3\\x=\dfrac{5}{4}\end{matrix}\right.\)
Tìm x:
C, X^2-9=2×(x+3)^2
b, x^3-3x^2+3x-1=0
d, x^2-8x+3x-24=0
Giúp mk với. Mk cảm ơn
Tim x:
a)(x-2)(x+2)=x.(x-3)
b)x^3+3x^2+3x+28=0
c)x^3-6x^2+12x-9=0
Tìm x
a) 15x2-3x=0
b) (3x-2) (x+3)+ (x2-9)=0
c) (x-1)3- (x+1) (2-3x)=-3
1.phân tích đa thức thành nhân tử
a) x^3 + 3x^2 + 3x + 1 - 27z^3
b) 81x^4 + 4
2.tìm x
a) 8x^3 - 50x = 0
b) (x + 9)^2 + 2.(x + 9).(x - 3) + (x - 3)^2 = 0
bai 2
a)(5x+1)^2_(5x-3)(5x+3)=0
b)(x+3)(x^2-3x+9)-x(x-2)(x+2)=0
c)3x(x-2)-x+2=0
d)x(2x-3)-2(3-2x)=0
Tìm x biết :
a) x^2 - 3x + 2 (x-3) = 0
b) (x-1)(x+1) + x (x-9) = 2x^2 - 4
c) x (x-3) - 3x + 9 = 0
d) x (x+2) - (x-3)(x+3) = 5
đ) 2x (x+1) - (2x+1)(x-3) = 6
Giải các phương trình sau:
a)5x-6=6+2x
b)10-3x/2=6x+1/3
c)(3x-8)*(3x-8-(9+2x)) = 0
d)(x+3/x-3)-(x-3/x+3)=48/x^2-9
e) (3x-8)*(7-21x)-(9+2x)*(7-21x)=0
Tìm x
a/(3x+2)3-9(x3+6x2+x-2)=1
b/(3-x)(3+x)-3x(2-3x)=0
Giải PT ax+b=0 : (3x-1)^2-3(3x-2)=9(x+1)(x-3)
