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아theFind the value of k of quadratic equation2x² + kic +3=0, so that they have two equalsides. |
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Answer» Answer: if a quadratic equation has REAL and equal roots the the value of its discriminant D which is b²–4ac=0 in this equation- 2x²+kx+3=0 here, a(co-efficient of x²)=2 b(co-efficient of X)=k c(the constant value)=3 D=b²–4ac D=k²–4*2*3 D=k²–24 FOR EQUAL ROOTS”D” MUST BE EQUAL TO ZERO D=0 k² -24=0 |
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