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Maths Puzzle
Numerical Ability
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RAtional Expression
3x^2-18x
________
-9x^2
-x^2/3x^2-18x/0+0
-0x^2
3x^2-18x
-0x^2
3x^2-18x
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book Other Question
How do you factor:
{{{15x^4-13x^2-20}}}
start with 19, take away 1, leave 20. how do you do that?