\(9^x:3^x=3\)
\(\left(3^2\right)^x:3^x=3\)
rút gọn x
\(\Rightarrow3^2:3=3\)
\(\Rightarrow9:3=3;3.3=9\)
\(\Rightarrow x=1\)
\(9^x:3^x=3\)
\(\left(3^2\right)^x:3^x=3\)
rút gọn x
\(\Rightarrow3^2:3=3\)
\(\Rightarrow9:3=3;3.3=9\)
\(\Rightarrow x=1\)
tim x
3x(12x-4)-9x(4x-3)=30
tim x
(5x-7-9x):(-2-3x+7)=5-2(x-2)
\(P\left(x\right)=x^5-2x^33x^4-4x^2+11x-6\)6
\(Q\left(x\right)=3x^4+x^5-2\left(x^3+4\right)-10x^2+9x\)
a Tính H(x)=P(x)
bCM H(x) vô nghiệm
3x-21/3 + 4x-32/2 = 5x-37/4 + 9x-33/6
x+5/4 + x+6/3 + x+7/2 + x+8/1 = -4
3x-21/3 + 4x-32/2 = 5x-37/4 + 9x-33/6
Tính
a)9x⁶:3x³
b)25x⁷:(-5x²)
c)(3x⁵-6x³+9x²):(3x²)
d)(4x²+5x-6):(x+2)
tim nghiem cua cac da thuc
a,x^2+x
b,x^2+2x+1
c,2x^2+3x-5
d,x^2-4x+3
e,x^2+6x+5
f,3x(12x-4)-9x(4x-3)=30
g,2x(x-1)+x(5-2x)=15
tại sao 3x^2+9x= 3x(x+3)
cho hai đa thức F(x) = 6^2- 5x+8+3x-3x^2 + 3x^3 ; G(x) = 12x^2- 6 - 9x^2 + 3x^3
tìm x để F(x) =G(x)
cho hai da thuc
A(x)=\(^{x^5-2x^3+3x^4-9x^2+11x-6}\)
B(x)=\(3x^4+x^5-2\left(x^3+4\right)-10x^2+9x\) tinh C(x)=A(x)+B(x)
tim x de C(x)=\(2x+2\)
chung to rang C(x) khong the nhan gia tri bang 2012 voi moi x thuoc Z