You can put this solution on YOUR website! how do you solve this whole exponent equation?
(-3a^2c)*(3b^3c^7)^4
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That's not an equation. Equations have equal signs.
So there's nothing to solve.
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It can be rearranged, and simplified some.
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(-3a^2c)*(3b^3c^7)^4
= (-3a^2c*(81b^12c^28)
= -243a^2b^12c^29