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Math Help - solving for x with multiple exponents higher than 2

  1. #1
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    solving for x with multiple exponents higher than 2

    solving for x with multiple exponents higher than 2-screenshot-12-11-11-8-21-pm.jpeg

    I don't understand what is going on in the pink area. Can someone explain this?

    thanks
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  2. #2
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    Re: solving for x with multiple exponents higher than 2

    it's just factoring ...

    8(x+3)^7 (x-5)^4 + 4(x+3)^8(x-5)^3 = 0

    note the two terms have 4(x+3)^7 and (x-5)^3 in common. factor them out ...

    4(x+3)^7(x-5)^3[2(x-5) + (x+3)] = 0
    Attached Thumbnails Attached Thumbnails solving for x with multiple exponents higher than 2-equation.png  
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  3. #3
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    Re: solving for x with multiple exponents higher than 2

    oh I see now. ok thanks!
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