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Question
In a quadratic equation with leading coefficient 1, a student reads the coefficient 16 of x wrongly as 19 and obtain the roots as -15 and -4, then the correct roots are
In a quadratic equation with leading coefficient 1, a student reads the coefficient 16 of x wrongly as 19 and obtain the roots as -15 and -4, then the correct roots are
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Solution
The correct option is B -6, -10
x2 + 19x + k = 0.......(1)
Product of roots is k = 60
The original equation is x2+16x+60=0 => x=-10 , -6
-6, -10
x2 + 19x + k = 0.......(1)
Product of roots is k = 60
The original equation is x2+16x+60=0 => x=-10 , -6
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