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OpenStudy (anonymous):
how do I solve |x^2+x-28|= 28
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OpenStudy (anonymous):
\(0\) works by inspection, since \(|-28|=28\) other solutions a bit more tricky
OpenStudy (anonymous):
Use the basic definition of modulus/absolute value
OpenStudy (anonymous):
mod f(x) is positive when x>0 mod f(x) is negative when x<0
OpenStudy (anonymous):
so,|dw:1416092306157:dw|
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