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Solving Equations in
Quadratic Form
 Use
factoring when possible – it’s usually
faster.
 If
the equation includes RATIONAL
expressions: multiply through by the LCD!

Remember the concept of substitution… If we
let u = ___ and u2 = ___, it will be easier
solve. (remember to back-substitute)
1.
2.
3.
4.
5.
6.
1 +
1
= 3
x
x+2
4
3 – 5x-1 – 12x-2 = 0
x – 3√x + 2 = 0
x4 – 13x2 + 36 = 0
3x2/3 – 4x1/3 – 4 = 0
(x – 3)2 + 5(x – 3) – 15 = 0
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