Question

if A=x²+4, and B = y²-4, find : ( A+B )²

Answer 1

Answer:

x⁴+y⁴+2x²y²

Step-by-step explanation:

(A+B)²

(x²+4+y²-4)²

(x²+y²)²

x⁴+y⁴+2x²y²

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Answer 2

Answer:

x^4 + y^4

Step-by-step explanation:

A + B

= x^2 + 4 + y^2 - 4

= x^2 + y^2

(A+B) ^2

= ( x^2 + y^2 ) ^ 4

= x^4 + y^4

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