what is simply fully (root a + root 4b)(root a - 2rootb) please?
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a-4b
Since (a+b)(a-b) =a ^2+b^2
(Root a + 2 root b) (root a - 2rootb)=a-4b
Since (a+b)(a-b) =a ^2+b^2
(Root a + 2 root b) (root a - 2rootb)=a-4b
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