Evaluate 4(a2 + 2b) - 2b when a = 2 and b = –2

2 answers:

5 0

First you simply have to substitute 2 in replace of all the a's, and -2 in replace of all of the b's

4((2)2+2(-2))

Then you want to follow the order of operations, PEMDAS (Parantheses-Exponent-Multiplication-Division-Addition-Subtraction), and multiply within the parantheses.

4(4+(-4))

Next you will add within the parantheses (So add the 4 and -4 together)

4(0)

Lastly multiply

0

Your answer is 0

Hope this helps!

aivan3 [116]3 years ago

3 0

Answer:

Step-by-step explanation:

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