Blackcat0
Blackcat0
31-08-2017
Mathematics
contestada
how to factorise x squared minus 16
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jonese1
jonese1
31-08-2017
Not sure if this is right but you could have:
x^2 - 4^2
If you simplify further:
it is also a difference of 2 squares giving you: (x + 4)(x - 4)
Therefore x = -4 or 4
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LILRVN
LILRVN
31-08-2017
The answer is "(x-4) • (x+4)"
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