exam Maths Puzzle Numerical Ability

(x/(x+5))-(5/(x-5))=(x^2+25)/(x^2-25)

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exam Other Question

describe the resulting graphs by identifying the vertex point, the graphs direction and any axis intercepts gleaned from the table or graphs

y = x^2 - 4x
Multiply the following:

(x/3+3/4)(3x/4-3/5)