Question

Find the value of mso that the quadratic equation mx[x-7]+49=0has two equal roots';'

Answer 1

hear the value of m is 4 by using determinant=b^2-4ac.then put the value of m on equation we get new quardratic equation 4x^2-14x+49=0.using middle term spilting we get two equal root which is 7/2and 7/2.