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A²+ab+c²+a²-d² additiondare to Spam if u your 50 answer will be reported. ​

Answer»

Answer:

(a2 + ab + c2) - (a2 - D2 )

= a2 + ab + c2 - a2 + d2

= a2 - a2 + ab + c2 + d2

= ab + c2 + d2

Step-by-step EXPLANATION:

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