SOLUTION: Find f(-2) if f(x)=3x^2-4

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Question 6468: Find f(-2) if f(x)=3x^2-4
Answer by ichudov(507)   (Show Source): You can put this solution on YOUR website!
place (-2) instead of x:
3(-2)^2-4
Solved by pluggable solver: EXPLAIN simplification of an expression
Your Result:


YOUR ANSWER


  • Graphical form: simplifies to
  • Text form: 3*(-2)^2-4 simplifies to 8
  • Cartoon (animation) form:
    For tutors: simplify_cartoon( 3*(-2)^2-4 )
  • If you have a website, here's a link to this solution.

DETAILED EXPLANATION

Look at .
Replace constants in factor: highlight_red%28+%28-2%29+%29,highlight_red%28+2+%29 with highlight_green%28+4+%29
It becomes .
Look at .
Replace constants in expression: highlight_red%28+3%2A4+%29,highlight_red%28+-4+%29 with highlight_green%28+8+%29
It becomes .
Result:

Universal Simplifier and Solver


Done!
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