Question

determine whether the wall value given against the quadratic equation are the root of equation X square + 4 x minus 5 is equal to zero x is equal to 1 - 1

Answer 1

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Answer 2

Answer:

-1 is not the zero of given quadratic equation :

Because

(-1)^2+4(-1)-5

=1-4-5

=-3-5 is not equal to zero

Hence not a zero

But 1 is zero of given equation

1^2+4×1-5

=1+4-5

=5-5

=0

Hence -1 is not zero of p(x)

Step-by-step explanation: