exam Maths Puzzle Numerical Ability

Simplify by combining like terms.

x√18 - 3√8x^2

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exam Other Question

Hello out there,I need some help with some problems,the first one is,Evaluate:(a+b)^2.The next one is,Multiply:(a-2b)(a+2b).The next one is,Multiply:(g-6h)(g-6h).And the last one is,Multiply:x(x+1)(x-1).Thanks to whoever can help. Help Please!

Kevin earned $165 interest for 1 year on an investment of $1500. At the same rate, what amount of interest would be earned by an investment of $2500?

Thank you!