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What's the correct answer and why?
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What's the correct answer and why?

What's the correct answer and why?-example-1
User Gines
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3 votes
3x^4 becomes 3(3x)^4=3*3^4*x^4
y^2 becomes (3y)^2=3^2y²
the new z=3² the old z, so b is correct.
User Ravindra Gupta
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