find the following by using the identity 2 of algebraic identities:-(7/4x-⅔y)²
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Answer:
Step-by-step explanation:
(7/4x-2/3y)²
(a-b)²= a²+b² - 2ab
⇒a= 7/4x b=2/3y
= (7/4x)² + (2/3y)² - 2(7/4x)(2/3y)
= 49/16x² + 4/9y² - 7/3xy { after cancelation }
∴(7/4x-2/3y)²=49/16x² + 4/9y² - 7/3xy
Hope it is helpful. Take care.
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