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What is the coefficient of x^3 when 24x^4 + 6x^3 + 4x^2 + 7x - 5 is multiplied by 6x^3 + 3x^2 - 3x + 4 and the like terms are combined?

 Aug 13, 2021
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What is the coefficient of x^3 when 24x^4 + 6x^3 + 4x^2 + 7x - 5 is multiplied by 6x^3 + 3x^2 - 3x + 4 and the like terms are combined?

 

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\((24x^4 + 6x^3 + 4x^2 + 7x - 5)\cdot ( 6x^3 + 3x^2 - 3x + 4)\\ =144x^7+108x^6-30x^5+132x^4+{\color{blue}3x^3}-20x^2+43x-20\)

\(The\ coefficient\ of\ x^3\ is\ 3.\)

laugh  !

 Aug 13, 2021

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