exam Maths Puzzle Numerical Ability

I need to know that the symbol ^ means. The math problem is 3^2*(6-4)+8.

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exam Other Question

Geometry. A square has sides of length 3x - 2cm. Express the area of the square as a polynomial. i dont realli no how 2 word this...but wats it mean if theres an exponent before a sq. root (not after)...u multiply the sq. root by the exponent?