Question

Answer 1

Answer 2

a: \(\left\{{}\begin{matrix}x_1+x_2=-2\\x_1x_2=-35\end{matrix}\right.\)

Pt sẽ là \(x^2+2x-35=0\)

b: \(\left\{{}\begin{matrix}x_1+x_2=6\\x_1x_2=5\end{matrix}\right.\)

Pt sẽ là \(x^2-6x+5=0\)

c: \(\left\{{}\begin{matrix}x_1+x_2=\dfrac{5}{2}\\x_1x_2=1\end{matrix}\right.\)

Pt sẽ là \(x^2-\dfrac{5}{2}x+1=0\)