solve the quadratic equation by quadratic formula: 2(x/x+1)^2-5(x/x+1)+2=0
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The given quadratic equation is 2x
2
+5x+2=0
On comparing with ax
2
+bx+c=0
We get, a=2,b=5,c=2
∴ b
2
−4ac=(5)
2
−4×2×2
=25−16
=9
x=
2a
−b±
b
2
−4ac
=
2×2
−5±
9
=
4
−5±3
x=
4
−5+3
x=−
2
1
or x=−2
∴ −
2
1
and −2 are the roots of given quadratic equation.
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