exam Maths Puzzle Numerical Ability

3[12x-2(5x-1)]
3[12x-10x+2]
3[2x+2] = 6x+6

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exam Other Question

Evaluate: 1n e^(-9x).

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what is the equation of the perpendicular bisector of the line between the poins (2,2)and (6,6)












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