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Mathematics
OpenStudy (anonymous):

factor completely 16v^2-121

OpenStudy (anonymous):

recognize the difference of two squares \[a^2-b^2=(a+b)(a-b)\]

OpenStudy (anonymous):

in this case \[a=4v,b=11\]

OpenStudy (anonymous):

so you get \[(4v+11)(4v-11)\]

OpenStudy (anonymous):

difference of squares

OpenStudy (anonymous):

take sqrt of 16 and sqrt121

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