A number to the 8th power divided by the same number to the 5th power equals 216
2 answers:
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Hello!
The answer are:
- Product of powers.
- Power of a power.
- Negative exponents.
<h2>Why?</h2>Let's solve it!
It's a math rule that we must solve first what's into a brake or parenthesis, so,
First: Product of powers
According to the exponent's law, we have a product of powers case, so, we need to sum the exponents and keep the base
Exponents: 5 and 3
Base: 7
Applying it we have:
Then,
We have a power of a power case, which involves multiplying the exponents:
Exponents: 3 and -4
Then,
Finally, we can apply the negative exponents, the negative exponent's rules state that negative exponents are the reciprocal of the positive exponents,
So, we will have that:
Have a nice day!
Answer:
Step-by-step explanation:
Given
on solving this mixed fraction we get;
Now adding these fractions by same denominator method.
- f (x) = 3x² + x
- Find f (-5).
Given,
- f (x) = 3x² + x
Now, we have to find f (-5). To find this, we just need to substitute -5 in the place of x.
So,