Question

Which expression is equivalent to (7-8) (78)?

А
49-5
B
49-11
C
7-5
D 7-11

Answer 1

-78

Explanation:

(7-8)(78)

(-1)(78)=-78

Answer 2

The equivalent expression to
`\(7^(-8)* 7^3\)` is
`\(7^(-5)\)` (option C)

How to determine the equivalent expression?

To find the equivalent expression to
`\(7^(-8) * 7^3\)`, you can apply the properties of exponents, specifically the product rule of exponents, which states that when you multiply two terms with the same base, you add their exponents.

Therefore:

`\[7^(-8) * 7^3 = 7^(-8 + 3) = 7^(-5)\]`

So, the equivalent expression to
`\(7^(-8)* 7^3\)` is
`\(7^(-5)\)`.

Therefore, the correct answer is C.
`\(7^(-5)\)`.

See complete question on the attached image