if alpha and beta are the zeros of the polynomial 2 X square + 3 x minus 6 find the value of the following first alpha square plus beta square and Alpha minus beta
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solution of both parts are in the attached pic... :)
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vanshika1839:
How the 2ab can be negative
open the bracket and simplify ...
But in the formula
(a+b)^2 - 2ab = (a^2 + b^2 + 2ab ) - 2ab = a^2 + b^2 = LHS
ok thanks
yeah! and.. you're welcome! ^_^
and its just alpha minus beta
yeah! first, i squared it and then took the root of the answer .... i took square for simplification... so that the result will come in the form of (a + b ) and ab .. bcoz we know the values of them ....
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Answer: I hope its helpful. Give me support
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