Answer: 16*y*y ; or, write as: 16y * y .
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Explanation:
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Refer to the following "laws", or "properties", of exponents:
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1) (xy)ⁿ = xⁿ * yⁿ ;
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2) (aᵇ)ⁿ = a⁽ᵇ*ⁿ ⁾ ;
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→ So; (4y)² = 4² * y² = 16 * y² = 16*y*y ; or, write as: 16y*y .
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