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Who knows the way to factorise this? a4 - 13a2 + 36
asked
Jul 11, 2017
in
Algebra
by
Antoine
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1 Answer
Hello! Did you try doing it this way:
a
4
- 13a
2
+36=(a
2
-9)(a
2
-4)
=(a+3)(a-3)(a+2)(a-2)
answered
Jul 11, 2017
by
Alyson
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