(1by4a-1by2b+1)sq
वन बाय फोर ए माइनस वन बाय टू बी प्लस वन ब्रैकेट 9 स्क्वायर
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Answer:
<<<a²/16+b²/4+1-ab/4-b+a/2>>>> (answer)
Step-by-step explanation:
(1/4a-1/2b+1)²
=(1/4a)²+(-1/2b)²+(1)²+2*1/4a*(-1/2b)+2*(-1/2b)*1+2*1*1/4a
=a²/16+b²/4+1-ab/4-b+a/2 (answer)
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