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what is the product of the roots of x2-4x-5=0?

Sagot :

Solve by factoring:
(x + 1) (x - 5) = 0

x + 1 = 0             x - 5 = 0
x = -1                  x = 5

The roots are  -1 and 5

The product of -1 and 5:

(-1) (5) = -5

- 5 is the product of the roots of the given equation.