Explain how (-2) + 8 is equal to 6

Mathematics

1 answer:

Paul [167]2 years ago

8 0

Step-by-step explanation:

-2+8 is the same as 8-2 which equals 6.

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Which is the last operation performed when evaluating (8 minus 2 x) squared + 4 for x = 3?

kompoz [17]

Answer:

addition

Step-by-step explanation:

The given expression is $(8-2x)^2+4$

We want to determine the last operation performed when evaluating this expression for x=3.

We substitute to get:

$(8-2*3)^2+4$

Multiply within the parenthesis to get:

$(8-6)^2+4$

Subtract to get:

$2^2+4$

Evaluate the exponent to get:

4+4

Add to obtain:

Hence the final operation is addition

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kotykmax [81]

When you multiply a same number but with different powers, you can simply add the powers together. So, in your question, add the powers -1 and -7 together.
7^(-1) x 7^(-7) = 7^(-8)

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So your answer would be 7^(-1).
Hopefully my explanation was clear?

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dmitriy555 [2]

Answer:

Step-by-step explanation:

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