Question

X²-2xy+y² when x=3 and y=2​

Answer 1

1

Explanation:

First plug in x and y:

(3)^2 - 2(3)(2) + (2)^2

Use order of operations (PEMDAS). First, evaluate the exponents:

9 - 2(3)(2) + 4

Then multiplication:

9 - 12 + 4

Then addition and subtraction, which is done from left to right:

-3 + 4

1

Answer 2

`{x}^(2) - 2xy + {y}^(2) \\ x = 3 \\ y = 2 \\ then \: we \: can \: written \: as \\ {3}^(2) - 2 * 3 * 2 + {2}^(2) \\ = 9 - 12 + 4 \\ = - 3 + 4 \\ = 1 \\ or \: in \: another \: way \\ this \: is \: the \: expansion \: of \: {(x - y)}^(2) \\ so \: put \: x = 3and \: = 2in {(x - y)}^(2) \\ then \: {(3 - 2)}^(2) \\ = {1}^(2) = 1 \\ thank \: you`