book Maths Puzzle Numerical Ability

Could you help me rewrite the expression 2sqrt3+sqrt2/sqrt3-sqrt2 so there are no radicals in the denominator? I guess we could say rationalize the denominator. Thank you so much.

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book Other Question

How do I solve an equation which begins like this.

radical x-3-7=0

radical 4x^2+x-3=2x This is a problem that I have absolutely no idea how to do it.

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