Mathematics, 14.07.2019 07:00 davidoj13
Factor 3x^2-20x-7. i need the steps of factoring it out , don't just put the question into a calculator and give me an answer. i want to get how to do it.
Answers: 1
![3x^2-20x-7\\\\ =3(x^2-\dfrac{2*10}{3} )-7\\\\ =3(x^2-\dfrac{2*10}{3}+\dfrac{100}{9} )-\dfrac{100}{3}-7\\\\ =3(x-\dfrac{10}{3})^2-\dfrac{121}{3}\\\\ =\sqrt{3}[(x-\dfrac{10}{3})+\dfrac{11}{3}]*\sqrt{3}[(x-\dfrac{10}{3})-\dfrac{11}{3}]\\\\ =3(x+\frac{1}{3})(x-\dfrac{21}{3})\\\\ =(3x+1)(x-7)](/tpl/images/0087/7805/93ff5.png)
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Factor 3x^2-20x-7. i need the steps of factoring it out , don't just put the question into a calcula...
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