4 (ii) 16 | at + 15.

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter5: Factoring Polynomials
Section5.7: Factoring Pattern For X2+bx+c, C Positive
Problem 4OE
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4. Let a be an odd integer. Show that
(i) 8|a² – 1;
(ii) 16 | a4 + 15.
Please do part (ii), thank you
Transcribed Image Text:4. Let a be an odd integer. Show that (i) 8|a² – 1; (ii) 16 | a4 + 15. Please do part (ii), thank you
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