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Solve for x:9x^2-49=0

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SIMPLE! add 49 to the other side-
9x^2=49
Now take the square root of 49. I'm in 10th grade, isnt this easy? maybe im doing it wrong?

9x^2=49
3x=7
x=7/3

stupid 10th grader

positive or negative 7/3
stupid whoever u are

X equals minus seven over 3 or seven over three. We've been dealing with this in my school so I'm certain as death about it.

-+7/3

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