(a + b )^2 × (a - b)^2
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Step-by-step explanation:
(a+b)² × (a-b)²
USING IDENTITY 1 & 2 RESPECTIVELY
(a² + b² + 2ab) (a²+b²-2ab)
a⁴ + ab² - 2a²b + a²b² + b⁴ - 2ab²+2a³b + 2ab³ - 4a²b²
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3
Step-by-step explanation:
=(a+b)² x (a-b)²
=(a²+b²+2ab)(a²+b²-2ab)
=a⁴+a²b²-2a³b+a²b²+b⁴-2ab³+2a³b+2ab³-4a²b²
=a⁴+b⁴-2a²b²
=(a²-b²)²
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