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Mathematics 18 Online
OpenStudy (anonymous):

x2 - 49 ≤ 0?

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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