SOLUTION: g (x) = (x + 7)(x - 8), find g(-4)

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Question 5873: g (x) = (x + 7)(x - 8), find g(-4)
Answer by ichudov(507) About Me  (Show Source):
You can put this solution on YOUR website!
Use -4 instead of x:
((-4)+7)*((-4)-8)
Solved by pluggable solver: EXPLAIN simplification of an expression
Your Result:


YOUR ANSWER


  • Graphical form: %28%28-4%29%2B7%29%2A%28%28-4%29-8%29 simplifies to -36
  • Text form: ((-4)+7)*((-4)-8) simplifies to -36
  • Cartoon (animation) form: simplify_cartoon%28+%28%28-4%29%2B7%29%2A%28%28-4%29-8%29+%29
    For tutors: simplify_cartoon( ((-4)+7)*((-4)-8) )
  • If you have a website, here's a link to this solution.

DETAILED EXPLANATION

Look at %28highlight_red%28+%28-4%29+%29%2B7%29%2A%28%28-4%29-8%29.
Remove unneeded parentheses around terms highlight_red%28+-4+%29
It becomes %28-highlight_green%28+4+%29%2B7%29%2A%28%28-4%29-8%29.
Look at %28-4%2B7%29%2A%28highlight_red%28+%28-4%29+%29-8%29.
Remove unneeded parentheses around terms highlight_red%28+-4+%29
It becomes %28-4%2B7%29%2A%28-highlight_green%28+4+%29-8%29.
Look at %28-highlight_red%28+4+%29%2Bhighlight_red%28+7+%29%29%2A%28-4-8%29.
Added fractions or integers together
It becomes %28highlight_green%28+3+%29%29%2A%28-4-8%29.
Look at %283%29%2A%28-highlight_red%28+4+%29-highlight_red%28+8+%29%29.
Added fractions or integers together
It becomes %283%29%2A%28highlight_green%28+-12+%29%29.
Look at %283%29%2A%28highlight_red%28+-12+%29%29.
Removed extra sign in front of -12
It becomes %283%29%2A%28-highlight_green%28+12+%29%29.
Look at highlight_red%28+%283%29%2A%28-12%29+%29.
Removed extra sign in front of -36
It becomes -highlight_green%28+36+%29.
Result: -36

Universal Simplifier and Solver


Done!