Asked by rr.
How would you start to simplify:
a^4-256
I know that 4^4=256, but I don't know what to do with this ..
a^4-256
I know that 4^4=256, but I don't know what to do with this ..
Answers
Answered by
bobpursley
(a^2-16)(a^2+16)
(a-4)(a+4)(a^2+16)
now, if you include imaginary numbers, letting j = sqrt(-1), then
(a-4)(a+4)(a+4j)(a-4j)
(a-4)(a+4)(a^2+16)
now, if you include imaginary numbers, letting j = sqrt(-1), then
(a-4)(a+4)(a+4j)(a-4j)
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