exam Maths Puzzle Numerical Ability

Find the slope of the line through the following pairs of points (-3,5) and (2,10)

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exam Other Question

(4*square root of 5)+(7*square root of 5) I need help with this division of radical expression

sqrt 3x^3y/sqrt6xy^3

sqrt 3*x*x*x*y/ sqrt 2*3*x*y*y*y

= x sqrt 3*x*y/ y sqrt 2*3*x*y