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Maths Puzzle
Numerical Ability
Write in scientific notation.
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book Other Question
Without drawing a graph how can I determine (a) how many x-intercepts the parabola has (b) whether its vertex is above, below or on the x- axis?
y = -x^2 + 2x-1
Find all the values of x from the following equation:
30/2x+1 minus 8/x-1 + 2=0