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I need help with this problem please and please make it legible I often can't read the handwriting. (20 points) Suppose that xzy + xyz

I need help with this problem please and please make it legible I often can't read the handwriting.

(20 points) Suppose that xzy + xyz + y3 = x3: a) Using the method of proof by oontrapositive, show that if x and y are not both zero, then y =0: 0. b) Using the method of proof by contradiction, show that if x and y are not both zero, then y =0: 0

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