\(x^2=3\)
\(\Rightarrow x=\sqrt{3}\)
\(x^2=3\)
\(\Rightarrow\orbr{\begin{cases}x=\sqrt{3}\\x=-\sqrt{3}\end{cases}}\)
Vậy\(\orbr{\begin{cases}x=\sqrt{3}\\x=-\sqrt{3}\end{cases}}\)
Cho đa thức B(x) = 2\(x^{^{ }2}\)-4x + 3. Tính B(3), B(-\(\dfrac{1}{2}\) )
Cho đa thức M(x) = 7\(x^3\)- 3\(x^4\)- \(x^2\) + 3\(x^2\)- \(x^3\)- 3\(x^4\)- 6\(x^3\)
Cho đa thức N(x) = 3x - 5\(x^3\) + 8\(x^2\)- 5x + 5\(x^3\) + 5
tìm x
a) 5x(x-3)(x+3)-(2x-3)^2- 5(x+2)^2 +34x(x+2)=1
b) (x-2)^3+ 6(x+1)^2 - (x-3)(x^2+3x+9)=97
gia tri cua x thoa man x/2^2+ x/2^3+x/2^4=x/3^2+x/3^3+x/3^4
tìm x biết: 3^x+3^x+2=2430
2^x+3-2^x=224
3^x+2-3^x+1+3^=189
2 (x-3).(x^2+3x+9)-(x+3)^2
3 (2x-1)^2 +2x^2.(x-2).(x+3)^2
Tìm x biết: x/2^2+x/2^3+x/2^4=x/3^2+x/3^3+x/3^4
giải chi tiết giúp mình vs
1)x^2.(2x^3-x^2+4x) 2)(x+2).(5x^3-3x^2+x) 3)(x^2-2).(x^2+2x-1) 4)(x^2+x+1).(x-1)
.A) x/x+1=1/2 , B) x/2=x/3 , C) x+1/2=x+1/2017, i)3/x=x/2017 , O) x:3=x+1/2 , m) x+1/2=x+2/3 ,P) x+1/2=x , M) 2/x=x/8 , Q) x2/2=8/x2 , r) x3/2=32/x