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chelsa11136

If f(x)=x^2+3x-4, find the value of f(-4). Show all work.

  • 2 years ago
  • 2 years ago

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  1. carrie14stewart
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    okay all u do is plug in -4 for all x's

    • 2 years ago
  2. carrie14stewart
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    so -4^2 is what? 16

    • 2 years ago
  3. carrie14stewart
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    now add 3 X -4 which is 12 so 12+16 is what? 28

    • 2 years ago
  4. carrie14stewart
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    now subtract 4 from 28 which is ur final answer 24

    • 2 years ago
  5. chelsa11136
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    But the 12 would be negative?

    • 2 years ago
  6. carrie14stewart
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    yes sorry

    • 2 years ago
  7. chelsa11136
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    So would it be 0???

    • 2 years ago
  8. carrie14stewart
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    so now its -12+16 than take that and subtract 4

    • 2 years ago
  9. carrie14stewart
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    yes the answer is 0 good job!

    • 2 years ago
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