math,correction

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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