book Maths Puzzle Numerical Ability

What is (5x^2 + 3x +2)^2

I remember FOIL, but forget this one.

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book Other Question

a ladder is placed 10 feet from the building. how long is, to the nearest tenth of a foot, is the ladder, if it reaches 30 feet up the building? log(x)^2=2logx This one is also true right? Thank you for you help.