Find the value of m so that quadratic equation mx(x-7)+49=0
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Given :quadratic equation mx(x-7)+49=0.
To find : the value of m so that quadratic equation has two equal roots.
=> mx(x-7)+49=0.....(1)
=> mx2 - 7mx +49 =0.
it is a quadratic equation where a = m , b =-7m , c = 49.
For equal roots D =0.
Given :quadratic equation mx(x-7)+49=0.
To find : the value of m so that quadratic equation has two equal roots.
=> mx(x-7)+49=0.....(1)
=> mx2 - 7mx +49 =0.
it is a quadratic equation where a = m , b =-7m , c = 49.
For equal roots D =0.
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