Question

The value of x² - 2xy +y2 ,when x = 1 and y=2
a) 1

b)-1

c) 2

d)-2​

Answer 1

Answer:

x

2

−2xy+y

2

x = 1 || y = 2x=1∣∣y=2

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

2

−2(1)(2)+(2)

2

\implies1 - 4 + 4⟹1−4+4

\implies1 \: \: ans⟹1ans