Could someone factorise this really quick, with the whole answer, i just have to check if its right or wrong. i got x = -2 + or - Sqr (3)
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what?
Factorise x^2 + 4x +1
correct $\displaystyle (x+2-\sqrt{3})(x+2+\sqrt{3}) $
Originally Posted by andrew2322 Factorise x^2 + 4x +1 Use the quadratic equation: $\displaystyle x=\frac{-4 \pm \sqrt{16-4}}{2} \Rightarrow -2 \pm \sqrt{3}$
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