Question

factories :m as a power 4 -256​

Answer 1

hey

m^4 - 256 = 0

m^4 = 4^4

m = +/-4

m = + 4 and
m = -4

Answer 2

hey mate

here is your answer

${m}^{4} - 256 \\ = ( {m}^{2} + 16)( {m}^{2} - 16) \\ = ( {m}^{2} + 16)(m + 4)(m - 4)$