Asked by Sabrina
how to factor
9x8-745x4+1296
by
9x4-16??
Thankyou!!
9x8-745x4+1296
by
9x4-16??
Thankyou!!
Answers
Answered by
PsyDAG
Online "^" is used to indicate an exponent.
9x^8 - 745x^4 + 1296
Find factors for 1296 (2 * 2 * 2 * 2 * 9 * 9)
See how those can combine with factors of 9 from the first term to give the middle term.
9x^8 - 745x^4 + 1296 = (9x^4 - 16)(x^4 - 81)
9x^8 - 745x^4 + 1296
Find factors for 1296 (2 * 2 * 2 * 2 * 9 * 9)
See how those can combine with factors of 9 from the first term to give the middle term.
9x^8 - 745x^4 + 1296 = (9x^4 - 16)(x^4 - 81)
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