We can start by sketching the curve and obtain:
or We could have factorised the
expression forto obtainand solvedto obtainhence the set of values of
For the quadratic above, since the coefficient ofis 1 which is positive, we know it will be a “bum” curve,so the set of solutions forwill come in two parts,or
to solveThe curve is a “breast” curve and we can read off the solutionsor
We can also factorise the expression forto obtain and solvehence finding the set of solutions just given.
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