Question

If 7 and -4/5 are the roots of the equation (x-7) (5x+c)=0. Find the value of c.

Answer 1

Answer:

c = 151/39

Step-by-step explanation:

since -4/5 is a root of the equation ( x-7)(5x+c)= 0, so put x=-4/5 in the equation, we get

(-4/5 -7)( 5×(-4/5)+c) = 0

(-39/5)(-4+c)= 0

-4+c = -5/39

c = -5/39 +4

c = 151/39