Ava45018
Ava45018
16-02-2018
Mathematics
contestada
What's the correct answer and why?
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tynollette
tynollette
16-02-2018
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.
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