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DF001
 one year ago
Help with Algebra 3y10=y^2
DF001
 one year ago
Help with Algebra 3y10=y^2

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DF001
 one year ago
Best ResponseYou've already chosen the best response.0please check if i am correct

phi
 one year ago
Best ResponseYou've already chosen the best response.0This step should be fixed dw:1444059219806:dw

phi
 one year ago
Best ResponseYou've already chosen the best response.0The rest looks ok. 10 + 9/4 is 40/4 + 9/4 = 49/4 and \[ y^2  \frac{3}{2}y + \frac{3^2}{2^2} = \frac{49}{4} \] the left side is a perfect square \[ (y\frac{3}{2})^2= \frac{49}{4}\] take the square root of both sides \[ y  \frac{3}{2} = \pm\frac{7}{4} \] add 3/2 to both sides to find y \[ y= \frac{3}{2} \pm \frac{7}{4} \] that can also be written as \[ y = \frac{6\pm7}{4} \] or y= 1/4 and y= 13/4
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