book Maths Puzzle Numerical Ability

what is the answer and how do i solve and graph x<5

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book Other Question

In this problem you are to factor out the expression.
3x^2(r + 3s) -6y^2(r + 3s) I can not figure out how this is the answer:
3(r + 3s)(x^2-2y^2)

Please show the steps.
Fill in the blank to make a true statement.
The inequality c <x< l is equivalent to _______________.



c> x and x> l

c> x and x< l

c< x and x< l

c< x