book Maths Puzzle Numerical Ability

Please help me with this problem



Perform the indicated operations:
√[50] + 2√[32] - √[8]



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book Other Question
How do you graph each system of inequalities for this problem? Can someone help me please? Thank you-

34) 3x + 2y <2
-x - 2y >4 Please Help!
1. -13 - 20 = 3x + 15 - 2x
2. y/-2 = -8 + 3squared
3. -15/3 = -2(5x) - 6x
4. -x = 42

I am so confused, Please HELP ME.