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mikaa_toxica13

  • 3 years ago

Choose the correct simplification of (2x3 + x2 − 4x) − (9x3 − 3x2). 11x3 − 2x2 − 4x −7x3 + 4x2 − 4x −2x3 − 2x2 − 4x −7x3 − 4x2 − 4x

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  1. anonymous
    • 3 years ago
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    \[ (2x^3 + x^2 − 4x) − (9x^3 − 3x^2)\] distribute the minus sign and get \[2x^3+x^2-4x-9x^3+3x^2\] and then combine like terms

  2. anonymous
    • 3 years ago
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    \[2x^3-9x^3=-7x^3\] and \[x^2+3x^2=4x^2\]so you get \[-7x^3+4x^2-4x\]

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