Question

Using suitable identities find the product of (x+y/5+1) (x-y/5-1)

Answer 1

Step-by-step explanation:

• x^2-xy/5-x+xy/5-y^2/25-y/5+x-y/5-1
• x^2-y^2/25-2y/5-1=0
• 25x^2-y^2-10y-25=0

Answer 2

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