Question

3. a) Write the expansion of (x+y)2 and (x-y)2

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Answer 1

(x + y)² = x² + y² + 2xy

(x - y)² = x² + y² - 2xy

Answer 2

Answer:

(x+y)^2=x^2+2xy+y^2

(x-y)2= x^2-2xy+y^2

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