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Maths Puzzle
Numerical Ability
x=1,y=-2
3x^2y-4xy^2+xy
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book Other Question
Sketch the graph of the function y = - x^2 - 20x -3. What are the domain and range of the function? What are the x-intercepts? Approximate to two decimal places.
a line passes through a(1,-3) and b(2,7)
write the equation of a line perpendicular to a. how would you go about solving this problem?