plz zoom this attachment and answer plz
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Here is the answer.
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Answer:
(a) (x-2y)² = (a-b)² = x² + 4y² - 4xy
(b) (3y - 2z)² = (a-b)² = 9y² + 4z² - 12yz
(c) (3x - 1/3x)² = (a-b)² = = 9x² + 1/9x² - 2
Step-by-step explanation:
(a) (x-2y)² = (a-b)²
(a-b)² = a² + b² - 2ab
(x-2y)² = x² + (2y)² - 2 × x × 2y
= x² + 4y² - 4xy
(b) (3y - 2z)² = (a-b)²
(a-b)² = a² + b² - 2ab
(3y - 2z)² = (3y)² + (2z)² - 2 × 3y × 2z
= 9y² + 4z² - 12yz
(c) (3x - 1/3x)² = (a-b)²
(a-b)² = a² + b² - 2ab
(3x - 1/3x)² = (3x)² + (1/3x)² - 2 × 3x × 1/3x
= 9x² + 1/9x² - 2 [ Because two 3x can be cancelled.]
HOPE IT HELPS U!
MARK AS BRAINLIEST!
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