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OpenStudy (anonymous):
factorise 5x^2-1 1/4
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OpenStudy (agreene):
\[5x^2-1\frac14\] is this the question?
OpenStudy (anonymous):
yes
OpenStudy (agreene):
\[5x^2-1\frac14=5x^2-\frac54\] \[\frac54(2x-1)(2x+1)\]
OpenStudy (anonymous):
my book gives the answer 5(x−1/2)(x+1/2)
OpenStudy (anonymous):
It says the same when you divide 2 from each bracket
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