exam Maths Puzzle Numerical Ability

a triangle has 6 sides , w y z and y z x find the missing part.
wz= 6 , zx=8 , and wy = 9, find xy , the base is w z x

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exam Other Question

I cant find a good example of how to graph a porabola in x-itercept and y-intercept form. Can you explain these to things better to me in note form pleas. It would really help me out in my math class. Thank you. ax^2-(2a+1)x+(a+1)=0
Then the product x1x2 is equal to:

I know I have to use the quadratic formula: x=-b+-sqrt of b^2-4ac/2a

Ahhhh this is a hard one