exam Maths Puzzle Numerical Ability

find the perimter of the triangle :
4 is one side and another side is 5square-3 square and the last side is 5 square+ 3square.

Thanks you

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exam Other Question
solve by factor completing the square
x^2 - 8x+10=0
x^2 - 8x= -10
(8/2)^2= 64/4= 16

x^2 - 8x + 16=-10 +16
what else to do after this step? I have 2 problems that i can't figure out for my math paper. the 1st one is
(2*3with a power of 0 m with a power of 3 n with a power of -2)and -1 as a power on the outside of th