document.write( "Question 5873: g (x) = (x + 7)(x - 8), find g(-4) \n" ); document.write( "
Algebra.Com's Answer #3039 by ichudov(507)\"\" \"About 
You can put this solution on YOUR website!
Use -4 instead of x:\r
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Solved by pluggable solver: EXPLAIN simplification of an expression
Your Result:

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  • 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) )
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  • If you have a website, here's a link to this solution.
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DETAILED EXPLANATION

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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\".
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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\".
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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\".
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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\".
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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\".
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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\"
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Universal Simplifier and Solver

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Done!
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