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lara [203]
3 years ago
9

45 points!!! Will mark BRAINLIEST must show explanation!

Mathematics
1 answer:
andrew-mc [135]3 years ago
6 0

Answer:

  • 4hx  - 6h

Step-by-step explanation:

<u>Given </u>

  • f(x) = x^2 - 3x

<u>Simply</u>

  • f(x + h) - f(x - h)

<u>Solution</u>

  • f(x + h) - f(x - h) =
  • (x + h)^2 - 3(x + h) - (x - h)^2 + 3(x - h) =
  • x^2 + 2hx + h^2 - 3x - 3h - x^2 + 2hx - h^2 + 3x - 3h =
  • (x^2 - x^2) + (2hx + 2hx) - (3x - 3x) + (h^2 - h^2) - (3h + 3h) =
  • 4hx  - 6h
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