anonymous
  • anonymous
im guessing we use first.outer.inner.last for this, but i'm still having trouble with multiplying these polynomials: (2x+5)(-3x^2+5x-4) ty in adv
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
just mulyiply each term in the second bracket first by 2x then by +5 and then simplfy
anonymous
  • anonymous
do u want me to demonstrate it?
anonymous
  • anonymous
yes, please ty

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amistre64
  • amistre64
you use: the distributive property. Not some memory device to ingrain stupidity :)
anonymous
  • anonymous
lol
anonymous
  • anonymous
OK: (2x X -3x^2) + (2x X 5x) + (2x X -4) + (5 X -3x^2) + (5 X 5x) + (5 X -4) = -6x^3 + 10x^2 - 8x -15x^2 -25x - 20 = -6x^3 - 5x^2 -33x - 20
amistre64
  • amistre64
(2x+5)(-3x^2) + (2x+5)(5x) + (2x+5)(-4) 2x(-3x^2) +5(-3x^2) +2x(5x) +5(5x) +2x(-4) +5(-4) -6x^3 -15x^2 +10x^2 +25x -8x +-20 -6x^3 -5x^2 +17x - 20 ... right?
anonymous
  • anonymous
ty for the replies jimmyrep and amistre64 although both answers arent the same
amistre64
  • amistre64
jimmy did a human error, 5(5x) = 25x; not -25x :) other than that he did quite well

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