hernandezaracel
hernandezaracel
23-01-2018
Mathematics
contestada
factor binomial -16r^2+1
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choixongdong
choixongdong
23-01-2018
-16r^2+1
= 1 - 16r^2
=(1 +4r)(1 - 4r)
Answer Link
altavistard
altavistard
23-01-2018
I'd suggest you write -16r^2+1 in the equivalent form 1-16r^2. This makes clearer the fact that
-16r^2+1 is the difference of 2 squares.
a^2 - b^2 = (a-b)(a+b)
so
1-16r^2 = (1-4r)(1+4r) (answer)
Answer Link
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