Question

if X = 3 and y = -2 then evaluate the following x^2 - 2xy + y^2
​

Answer 1

Answer:

25

Step-by-step explanation:

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

Using the identity (a + b)^(2) = a^(2) + b^(2) + 2ab,

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

(3+2)^(2)

5^(2)

25

Answer 2

Answer:

25

Step-by-step explanation:

Given expression,

x^2 - 2xy + y^2

putting respective values,

= 3^2 - 2x3x (-2) + (-2)^2

= 9 + 12+ 4

= 25