exam Maths Puzzle Numerical Ability

Is this function always increasing, decreasing, or remaining constant?

y = 0(-x + 1)
Always increasing
Always decreasing
Always constant
There is no way to know

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exam Other Question

48. x/(x-2)-(x+1)/x=8/(x^2-2x)

56. 5/(x+6)+2/(x^2+7x+6)=3/(x+1)

Will someone please, please help me to...

Solve and check each of the following equations for x.
How do you factor completely 8n^2-2?