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jomamarocks

  • one year ago

Evaluate 3x2 − x, if x = -4.

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  1. swissgirl
    • one year ago
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    \(f(x)=3x^2-x\) Now substitute -4 instead of the x's and then solve

  2. swissgirl
    • one year ago
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    \(f(-4)=3(-4)^2-(-4)\)

  3. swissgirl
    • one year ago
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    Solve and there is your answer

  4. jomamarocks
    • one year ago
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    thanks

  5. swissgirl
    • one year ago
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    Be careful with the negatives. (-x)^2=x^2 Meaning any negative value squared will always be positive

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