exam Maths Puzzle Numerical Ability

hey, i would greatly appreciate it if you could solve this combinatorics problem for me

(n+2)!/n! = 56

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exam Other Question

Please help me with these problems.I cant figure them out.

SIMPLIFY EACH OF THE FOLLOWING.BEGIN WITH THE INNERMOST PARENTHESES.


1). (8x-y)-[-(2x + y)-(3x-6y)]


2). 6
What are the zero(s) for this equation:
4(x+6)^2-8=-4
a)x={-5}
b)x={-5,-7}
c)x={-5,0}
d)x={5,-7}