(x + y)²
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Answer:
x² + 2xy + y²
#HaveABrainlyDay
Step-by-step explanation:
(×+2)²=20
now for (g×)=¥ /f(a)
since /20=2/5 and -/20=-2
/5 we are rewrite the equetion as
×+2/5
subtract 2 fron the both sides
answer'''
×=¥2aquaroot5-2