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Science & Mathematics by Anonymous 2018-07-13 18:34:17
Social Science
Use the FOIL method to find the product below.(9x8 + 6)(-4x2 + 5)?
6 answers
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Anonymous
(9x8 + 6)(-4x2 + 5) = -36x10 + 45x8 - 24x2 + 30
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Anonymous
(9x^8 + 6)(-4x^2 + 5) = -36x^10 + 45x^8 - 24x^2 + 30
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Anonymous
-36x^10 + 40x^8 - 24x^2 + 30
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Anonymous
-36 x^10 + 45x^8 - 24x^2 + 30
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Anonymous
(9x8 + 6) = 72+6 = 78 (-4x2 + 5) = -8 +5 = -3 Answer: 78 X -3 = -234
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Anonymous
Do you know what FOIL means? First (9*x^8)*(-4*x^2) = -36*x^10 Outer (9*x^8)*5 = 45*x^8 Inner 6*(-4*x^2) = -24*x^2 Last 6*5 = 30 Add 'em up -36*x^10 + 45*x^8 - 24*x^2 + 30 (Using ^ to mean "to the power of" clarifies things.)
