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Mathematics
Felix Rojas
11 October, 00:19
Find the value of a2 + b when a = - 2 and b = 5
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Eden Banks
11 October, 03:47
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Answer: 9
Step-by-step explanation: In this problem, we're going to evaluate a² + b knowing that a = - 2 and b = 5.
So the first thing we want to do is substitute these numbers into our problem.
Since a = - 2, we will replace a with a - 2 and as we do that, we will put that - 2 in parentheses and square it since we have a². Squaring a number just means multiplying a number by itself so (-2) ² is equal to 4 since a negative multiplied by a negative gives us a positive.
Now we will replace b with 5 and now we have the following.
4 + 5 simplifies to 9.
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