a + a + a + a, 4a, a x a x a x a, a4, 4a + 5a, 9a, 3a x 5a x a x a, 15a4, 2a + 3a + 5a - 3a, 7a, a2 + a2 + a2 + a2 + a2, 5a2, 9a2 - 3a2, 6a2, 2a + a + a + a, 5a, 7a x a x a x a, 7a4, 5a + 3a - 4a -2a, 2a

Algebra Practice! Number 3

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