book Maths Puzzle Numerical Ability

My question says to simplify the radicals.

2 square root of 32+3 square root of 50-3 square root of 18

Could you help me? thanks!

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book Other Question

please help me on this question-- im terrible at math!

the spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, How long is each spoke? Round the answe to the nearest hundreth
3X
solve the following equation x: 64 = 2