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Dark Angel
Dark Angel asked in Science & MathematicsMathematics · 1 decade ago

64x^2-81x=? math problem please help!?

please help me solve it

64x^2 - 81x = ?

thanks in advance

Update:

i meant by factoring sorryif i was unclear XD

64x^2-81 =

(8x - 9)(8x + 9)

Now if the equation is like this

64x^2-81x = ???

2 Answers

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  • Natalie Z
    Lv 6
    1 decade ago
    Favorite Answer

    x(64x - 81) = 0

    x = 0 and x = 81/64

    x={0,81/64} ?

    Im not sure what else you can do with it?

    Good luck!

  • tj
    1 decade ago

    Start by factoring an x out of it.

    x (64x - 81) = 0

    The only way this equals zero is if

    x = 0 or 64x - 81 = 0

    So x = { 0 , 81/64 }

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