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Simplify. Express using exponents.

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Let's first split this expression into two parts. We have the (2h)7 and 7h. We need to simplify the (2h)7 before we can combine them.

(2h)7 = 27*h7=128*h7=128h7. In this step the exponent can be distrubed into the parenthese to each individual term.

We can now combine the 7h with what we got in the previous step:

128h7*7h=128*7*h7*h=896h8. As per law of exponents: xm*xn=xm+n

Hope this helps.