Question

$(x {}^{2} - y {}^{2} + 2xy + 1) - (x {}^{2} + y {}^{2} + 4xy - 5$
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Answer 1

Step-by-step explanation:

(x²-y²+2xy+1)

= 1.00000006

(x²+Y²+4xy-5)

= -4.99999994

= 6

answer is 6

Answer 2

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