(-3y2)4
Apply the product rule to -3y2.
(-3)4(y2)4
Raise -3 to the power of 4.
81(y2)4
Apply the power rule and multiply exponents, (am)n=amn.
81y2⋅4
Multiply 2 by 4.
81y8
81y8
Simplify (-3y^2)^4
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