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March 30, 2015

March 30, 2015

Posted by **emms** on Sunday, November 8, 2009 at 12:59am.

(4x+1)(x+4)=49

- 11th grade -
**drwls**, Sunday, November 8, 2009 at 8:10amRewrite it by multiplying it out, and factor.

4x^2 + 17x -45 = 0.

I don't see any "perfect square" here.

It also does not factor easily. Use the quadratic equation.

x = [-17 +/- sqrt(1009)]/8

x = 1.846 is one of the two solutions

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