# maths

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Solve the inequality //(2x-1)(x+3)/-4/< 1
where /x/ is the modulus of x.

• maths -

why not just use ||, since / is usually used for division?

||(2x-1)(x+3)|-4| < 1
You have four cases to consider:
|(2x-1)(x+3)|-4 positive or negative, and within those,
(2x-1)(x+3) positive or negative

you will quite possibly end up with a solution set comprising 4 intervals

• maths -

still cant solve it.....

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