1) a^16-256 = (a^8+16)(a^8-16) = (a^8+16)(a^4+4)(a^4-4)2) 81-10000a^8 = (9-100a^4)(9+100a^4) = (3-10a^2)(3+10a^2)(9+100a^4)3) 256b^4-81a^8 = (16b^2-9a^4)(16b^2+9a^4) = (4b-3a^2)(4b+3a^2)(16b^2+9a^4)
1) a^16-256 = (a^8+16)(a^8-16) = (a^8+16)(a^4+4)(a^4-4)
2) 81-10000a^8 = (9-100a^4)(9+100a^4) = (3-10a^2)(3+10a^2)(9+100a^4)
3) 256b^4-81a^8 = (16b^2-9a^4)(16b^2+9a^4) = (4b-3a^2)(4b+3a^2)(16b^2+9a^4)