Quadratic equation

Quadratic equation
7x2+bx+c=0



has roots x1 = 67 and x2 = -84. Calculate the coefficients b and c.

Correct answer:

b =  119
c =  -39396

Step-by-step explanation:

b=7(67+84)=119
c=767(84)=39396  7x2+119x39396=0 



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