fimd the roots of quadratic equation 2x²+3x-5=0
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p(x)=2x²+3x-5=0
a=2, b=3, c=-5
D=b²-4ac
D=(3)²-4(2)(-5)
D=9+40
D=49
√D=7
x=-b±√D/2a
x=-3+7/4
x=4/4
∴x=1
x=-3-7/4
x=-10/4
∴x=-5/2
∴ the roots of p(x)= 1, -5/2
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