I answered this
http://www.jiskha.com/display.cgi?id=1431486984
Twice the square of a positive number increased by three times the number is 14. Find the number.
2 answers
2x^2+3x =14
2x^2+3x-14=0
(2x+7)(x-2)=0 (factorize it)
x= -7/2 or x=2 (take the positive number)
2x^2+3x-14=0
(2x+7)(x-2)=0 (factorize it)
x= -7/2 or x=2 (take the positive number)