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Math Help - Solving for x in indices Equation

  1. #1
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    Solving for x in indices Equation

    Solve for x

    3^2x -3^x+2 + 8 = 0
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  2. #2
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    Check it please!

    Quote Originally Posted by delicate_tears View Post
    Solve for x

    3^2x -3^x+2 + 8 = 0
    (3^x)^2-3^x*3^2+8=0
    Let 3^x=a
    a^2-9a+8=0
    (a-8)(a-1)=0
    a1=8, a2=1
    3^x=8
    3^x=1

    x=0
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  3. #3
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    hey! yeah it's right!! Thankyou so much! Here's your simley face:
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