Question

The value of x2-2xy+y2 (x=1 ,y=2)

Answer 1

AnsweR :-

${x}^{2} - 2xy + {y}^{2}$

$x = 1 || y = 2$

$\implies{(1)}^{2} - 2(1)(2) + {(2)}^{2}$

$\implies1 - 4 + 4$

$\implies1 \: \: ans$

Procedure :-

$\implies$ First we will look at the equation, the we are given with the values of x and y in the brackets as x = 1 and y =2.

$\implies$ The we will put the 1 in place of x and 2 in place of y and then we will equate the whole Solution. Then we will cancel the -4 and + with with other. Then 1 is going to be left, which is your answer.

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Answer 2

Answer:

x2 – 2xy + y2

= 1||y = 2

(1) – 2(1)(2) + (2)

» 1-4+4

1 ans

step by step solution:-

First we will look at the equation, the we are given with the values of x and y in the brackets as x = I and y =2.

The we will put the I in place of x and 2 in place of y and then we will equate the whole Solution. Then we will cancel the -4 and + with with other. Then I is going to be left, which is your answer.