Exercise55

Simplify the following expressions if possible.

1) \(\displaystyle{ {a^{4}+a^{4}}=}\)

2) \(\displaystyle{ (a^4)(a^4)=}\)

3) \(\displaystyle{ {a^{4}+a}=}\)

4) \(\displaystyle{ (a^4)(a)=}\)

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