8. Which of the following expressions is equivalent to (-7)^5
-7 * -7 * -7 * -7 * -7
-7 * 5
(-7) * 7 * (-7) * 7 * -7
5 * 5 * 5 * 5 * 5 * 5 * 5
PLEASE HELP
ONE OF THESE ARE SUPPOSED TO BE EQUAL TO (-7)^5 = -16807
BUT A AND C ARE :((
I'M SO CONFUSED PLEASE HELP :(
while A and C both produce the same value,
A is clearly the best choice, since it shows (-7) multiplied 5 times.
Thanks steve :)
what is the answer?
its C.
LuL is wrong, it's A.
I understand your confusion. Let me explain how to correctly evaluate the expression (-7)^5.
To simplify (-7)^5, you need to raise -7 to the power of 5. This means multiplying -7 by itself five times.
The correct expression is: (-7) * (-7) * (-7) * (-7) * (-7)
This is equivalent to choosing the expression "A" from the options you provided:
-7 * -7 * -7 * -7 * -7
Let's calculate it step by step:
First, multiply the first two terms: (-7) * (-7) = 49. The sign of the product is positive since multiplying two negatives gives a positive result.
Next, multiply the product by -7: 49 * (-7) = -343. The sign of the product is negative since multiplying a positive number by a negative number results in a negative answer.
Repeat the process for the next two terms:
-343 * (-7) = 2401 (positive product)
2401 * (-7) = -16807 (negative product)
So, (-7)^5 is indeed equal to -16807.
To summarize, the correct expression is (-7) * (-7) * (-7) * (-7) * (-7), as mentioned in option "A".