Answer:
the first answer is a⁴ +am²
Step-by-step explanation:
when dividing exponents add or subtract each other
a² + a² = a⁴
am + am =am ² ( they each have one so they add up to two)
an and mn cancel each other out
2
The total yards gained was 13 yards.
If you do 8-15+20=13
<u><em>PLEASE MARK BRAINLIEST</em></u>
is only defined for 
, and under this condition we have that 
. But 1.7 > 1, so 
is not a real number.