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OpenStudy (anonymous):
x2 - 49 ≤ 0?
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OpenStudy (anonymous):
add +49 both side and take square root
OpenStudy (anonymous):
did @begzat's advice help ?
OpenStudy (anonymous):
(x-7)(x+7)<= 0 Now put values of x so that the product of the terms on the left hand side becomes less than zero
OpenStudy (anonymous):
yah thanks alot
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