If

Find (i) (ii) (ii) .

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22 x^{2} + 12 y^{12} + xy

- 14 x^{2} - 10 y^{2} - 20 xy

23 x^{2} + 12 y^{12} + xy

- 17 x^{2} - 10 y^{2} - 20 xy

24 x^{2} + 12 y^{12} + xy

- 15 x^{2} - 10 y^{2} - 20 xy

26 x^{2} + 12 y^{12} + xy

- 13 x^{2} - 10 y^{2} - 20 xy

answer is A.

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Detailed Solution

Concept- Each letter's value is presented in the form of a quadratic equation here. We will replace all of the values in the expression and conduct the specified operation. In the first section, we will sum all of the numbers and calculate the result. In the second portion, we will remove the terms in the brackets first, then the value of C from the resultant term.
i.

Here, substituting the values of A, B and

from the question, we get,

Now, adding the coefficients of same variables, we get,

Therefore,

ii.

Substituting the values of A, B and

from the question, we get,

Now, first we would solve

as they are in the brackets.

Now, solving further, we get,

(While opening the second bracket, all the positive sign changes to negative due to a outside negative sign)

So,