Question

the value of x² -2yx +y² when x=1 ,y =2 is​

Answer 1

Step-by-step explanation:

x²-2xy+y² {(x-y)²=x²-2xy+y²}

(x-y)²

(1+2)²

3²

9

Answer 2

Answer:

$x^{2} = 1^{2} : : 1^{2} = 1$ × 1 = 1

2yx = 2(1 × 2) = 2 × 2 = 4

$y^{2} =$ y × y = 2 × 2 = 4

1 - 4 + 4 = 1

Step-by-step explanation:

Answer is 1...

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