book Maths Puzzle Numerical Ability

When you take the square root of both sides of an equation, what
sign(s) must be given to the result on the right side if the variable is
on the left side?

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book Other Question

(( the square root of m) + ( the square root of 20)) all is squared or ^2



direction are to simplify
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