Select all that are like terms to 5a5b4.

Like terms must have the same variables raised to the same powers; their coefficients can be different. The expression is 5a⁵b⁴, so choices A (a⁵b⁴), D (−a⁵b⁴), and E (9a⁵b⁴) are like terms. The other choices have different exponents or are missing a variable.

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