how to solve this quadratic equation

Anonymous
timer Asked: Apr 3rd, 2016

Question description

I need help figuring out how to solve this problem correctly. 4x(2x+7)-5(2+7)=0   ... The way I learned I get the answer {-7/2,5/4} but mathway says its {-7/4,square root of 139/4} can anyone help explain if either answer is correct and why?

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