exam
Maths Puzzle
Numerical Ability
i need help with this question i have no idea how to beging to solve it.
it says : subtract the lower polynomial from the upper one
2x^2y-5xy^2+2 and
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exam Other Question
unlike denominators
x over x^2+2x+1 + 1 over x^2+5x+4=
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A company buysa copier for $10,000. The value of the copier is $10,000(1-n/20) after n years. After how many years will the value of the copier be $6,500?