This depends on how you place the parenthses- do you mean (3x) all to the second
power or 3 times x to the second? In the first case, the 3 becomes 9 and so the answer is
9 times 25= 225.
In the second case, the answer is 3 times 25 = 75.
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5
The GCF is 2^3 x 3^2 x 5
3x - 5 = 9 3x = 9 + 5 3x = 14 x = 14/3 or 4 2/3
√(3x - 5) = 3 ∴3x - 5 = 9 ∴3x = 14 ∴x = 14/3
3x-y=8 x+y=12 3x(12-x)=8 3x-12+x=8 4x-12=8 4x=20 x=5 x+y=12 5+y=12 y=7