math,correction

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Problem #1
Simplify by combining like terms.
xã(18) -3ã(8x^2)

My answer: -3xã(2)

Problem #2
Simplify each radical expression.
(ã(3) + 5)(ã(3) - 3)
My answer: -12



see my previous post, don't understand your symbol ã

sorry they are radicals

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