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Tainted

  • 2 years ago

Add. (x5 + 7x3 - 9) + (4x5 - 2x3 + 13) 5x5 + 5x3 + 4 4x5 - 5x3 - 4 4x5 + 9x3 + 22 5x5 + 9x3 - 22

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  1. Tainted
    • 2 years ago
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    New to polynomials

  2. aaronq
    • 2 years ago
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    does x5 mean x^5?

  3. Tainted
    • 2 years ago
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    yes it does

  4. aaronq
    • 2 years ago
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    so ill do one (x^5 + 7x^3 - 9) + (4x^5 - 2x^3 + 13) (1)break brackets.. in this case it's easy just remove them but if you had a negative sign infront of the bracket you need to change signs for everything inside that bracket eg -(1-3+5) = -1+3-5 (2) collect like terms .. group terms so you can visualize which ones are able to be added up. Since you can only add variables (in this case, "x") together when they're raised to the same power. e.g. x^2 +x^4 + 3x^2 +x^8 x^2 + 3x^2 + x^4 +x^8 = 4x^2 + x^4 + x^8 (3) write in increasing order of power

  5. aaronq
    • 2 years ago
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    wait i forgot to do it =(x^5 + 7x^3 - 9) + (4x^5 - 2x^3 + 13) =x^5 + 7x^3 - 9 + 4x^5 - 2x^3 + 13 = 7x^3- 2x^3+ x^5+ 4x^5 + 13 = 5x^3 + 5x^5 +13

  6. jenish
    • 2 years ago
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    5x5 + 5x3 + 4

  7. aaronq
    • 2 years ago
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    haha oh yeah i missed the x-less number thanks for correcting me

  8. jenish
    • 2 years ago
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    x5 + 7x3 - 9 + 4x5 - 2x3 + 13 x5 +4x5 +7x3-2x3 -9+13 =5x5 + 5x3 + 4

  9. jenish
    • 2 years ago
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    no problem :)

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