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Katlyn99

  • 3 years ago

x • x = 2x

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  1. JakeV8
    • 3 years ago
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    you might just be able to think about this one like a riddle... what number multiplied by itself is equal to that same number times 2? What level math is this? Are you supposed to solve it as an equation?

  2. Katlyn99
    • 3 years ago
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    im in 9th grade and yes i have to solve as an equation

  3. JakeV8
    • 3 years ago
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    Ok, so the left side is x^2 "x squared". So subtract 2x from both sides to move that term from the right to the left. x^2 - 2x = 0 Then you can factor the left side.

  4. JakeV8
    • 3 years ago
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    Factored, it becomes: x(x-2) = 0 So x can equal 0 or x can equal 2. Then you always always always ;) want to check your work against the original problem... x • x = 2x For x = 0, (0)(0) = 2(0) <<<--- correct For x = 2, (2)(2) = 2(2) <<< --- correct :)

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