Question

Verify : (x - y)² =x²- 2xy+y² for x = 2, y = 1.
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Answer 1

Answer:

Step-by-step explanation:

Answer 2

To verify: $(x - y )^{2} = x^{2} - 2xy + y^{2} \ for \ x = 2 \ and\ y = 1$

Given :   $x = 2 \ and \ y =1$

Now , substituting value of  $x$ and $y$ we can  verify given expression.

⇒    $(x - y )^{2} = x^{2} - 2xy + y^{2}$

carrying addition and subtraction operations we can verify

⇒    $(2 - 1) ^{2} = (2)^{2} -2 (2)(1) +(1)^{2}$

⇒     $(1)^{2} = 4 - 4 + 1$

⇒     $1 = 1$

Hence verified , since LHS = RHS .