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The functions f and g are defined above. If f (a) = g (a), what is the value of a

The functions f and g are defined above. If f (a) = g (a), what is the value of a-example-1
User Ralston
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Answer: (B) –1

Step-by-step explanation

We are given functions f(x) and g(x), and we are aked to fins a when f(a) = g(a). Therefore, we have to set the equations equal to each other. Additionally, we have to replace x with a:


f(a)=g(a)
a(a+1)=(a^2-1)

First, we have to multiply the a outside the parenthesis times the terms inside the parenthesis:


a^2+a=a^2-1

Then, we have to get all the similar terms to each side of the equation and simplify:


a^2-a^2+a=-1
a=-1

User Sriman
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