8a2 - 18ay + 7y2 , Factor each trinomial If possible?
回答 (3)
2009-02-15 7:09 am
✔ 最佳答案
8a^2-18ay+7y^2=(2a-1y)(4a-7y) answer//checking:
8a^2-4ay-14ay+7y^2
=8a^2-18ay+7y^2 correct!
2016-12-15 6:35 pm
(5c - 7) (c - 2) wager and look at technique. (components of 14 that upload/divide whilst one is elevated by using coefficient to total -17) a million*14 -a million * -14 2 * 7 ***(-2 * -7)*** examine answer: 5c * c = 5c^2 + 5c * -2 = -10c + -7 * -2 = 14 + -7 * c = -7c --------------------- 5c^2 - 17c + 14 answer is right
2009-02-15 8:35 am
8a^2 - 18ay + 7y^2
= 8a^2 - 14ay - 4ay + 7y^2
= (8a^2 - 14ay) - (4ay - 7y^2)
= 2a(4a - 7y) - y(4a - 7y)
= (4a - 7y)(2a - y)
= 8a^2 - 14ay - 4ay + 7y^2
= (8a^2 - 14ay) - (4ay - 7y^2)
= 2a(4a - 7y) - y(4a - 7y)
= (4a - 7y)(2a - y)
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