factorise...........
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Step-by-step explanation:
a² + b² - 2ab - 4c²
(a² - 2ab + b²) - 4c²
(a-b)² - 4c²
((a-b) - 2c)((a-b) + 2c)
n² + 1 / n² - 11
3/2 n² - 11
(√(3/2) n - √11)(√(3/2) n + √11)
5y² - 45y - 110 /5
y² - 9y - 22
(y - 11)(y + 2)
a³b³ - 9a²b² + 2ab + 6a²b² - 6a²b²
(a³b³ +3a²b² + 2ab) - 6a²b²
ab(a²b² + 3ab + 2) - 6a²b²
ab((ab +2)(ab +1)) - 6a²b²
ab((ab +2)(ab +1) - 6ab)
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