exam Maths Puzzle Numerical Ability

How many sides does a polygon with an interior angle measure of 120 degrees have?

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exam Other Question

how do i use the distributive property to rewrite this expression?

xa + xb
How do I complete the square for m(x)=-x^2+6x-4?

I tried dividing 6x by 2 and factored out -1 from x^2+6x. But how do you get the other number?