please solve using identities.
(a²+b²) = a² + 2ab + b²
(a²-b²) = a² - 2ab + b²
(a+b) (a-b) = a² - b²
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please solve using identities.
(a²+b²) = a² + 2ab + b²
(a²-b²) = a² - 2ab + b²
(a+b) (a-b) = a² - b²
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Answer:
(x-y)² = x² + y² - 2xy
(x-y)² = 80 - 2x12
(x-y)² = 80 - 24
(x-y)² = 56