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9. 9x^2+42x+49 10. y^2-10y+25 11. 81n^2-90n+25 12. 16+40x+25x^2
in Algebra 1 Answers by Level 1 User (320 points)

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1 Answer

??????? 9x^2 +42x+49=0

me just did that bout 5 minuts ago

roots=-2.33333333 (both av em)
by

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