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Mathematics 8 Online
OpenStudy (anonymous):

Factor completely: 16x2 − 81

OpenStudy (anonymous):

-49 if the question is 16*2-81. The X confused me if it was a variable or a multiplication sign.

OpenStudy (anonymous):

16^2-81

Parth (parthkohli):

\[16x^2 - 81\]

Parth (parthkohli):

This is a difference of two perfect squares.

OpenStudy (anonymous):

Ah. my bad, sorry. :)

Parth (parthkohli):

\[(a)^2 - (b)^2 = (a+b)(a-b)\]What is \(16x^2\) the square of?

OpenStudy (anonymous):

Solve the inequality: 7 − 4x > 35

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