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Maths Puzzle
Numerical Ability
What are the steps in adding, subtracting, multiplying, and dividing these problems:
f(x)=3x^2+4x-5
g(x)=2x+9
&
f(x)=x/x+1
g(x)=x^2-1
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book Other Question
Subtract and simplify:
2/x^2 + 6x - 27 minus 1/x^2 + 12x + 27
when diving -15 / -5 is the answer a positive or negative number?
Is the reciprocal of 12 112 or -12 or -112?