Answers

2016-07-20T21:17:37+08:00
X^2+x+2= (x^2+x)+2 = (x^2+x+1/4)+2-1/4 = (x+1/2)^2+7/4
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that's wrong!!
oops sorry
x= imaginary number square root of 7
I solved it mentally
2016-07-20T22:17:03+08:00
To solve quadratic equations by extracting square roots, you should find the square roots of the numbers
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