\(x^2-x-2x+2=0\)
\(\Leftrightarrow\left(x^2-2x+1\right)-\left(x-1\right)=0\)
\(\Leftrightarrow\left(x-1\right)^2-\left(x-1\right)=0\)
\(\Leftrightarrow\left(x-1\right)\left[\left(x-1\right)-1\right]=0\)
\(\Leftrightarrow\left(x-1\right)\left(x-2\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x-1=0\\x-2=0\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=1\\x=2\end{cases}}\)
Tim nghiem cua da thuc f(x) = 2x+x
Giai giup mk nhe !!!!
tim nghiem cua 2x^2+x
tim nghiem cua phuong trinh A=x^2+y^2-4y+2x+5
tim nghiem cua da thuc
x^2-2x
tim nghiem cua đa thức A=x^2+y^2-4y+2x+5
Tim he so a cua da thuc A(x)=ax^2+5x-3, biet rang da thuc co 1 nghiem bang 1/2?
***Can tim dap an dung, cac anh chi giai giup em a
tim nghiem cua da thuc: f(x)= 2x4+ x2+ 2016
Tim nghiem cua f(x) = (x-1)(x+3). Tim gia tri a,b cua g(x) = x3 - ax2 + bx -3. Biet nghiem cua f(x) cung la nghiem cua g(x)
Tim nghiem cua da thuc :
a,3x^2+5x+2
b,x(3-2x)x-(-2x^2+5x-4)
c,x^3+3x
