Question

verify : (x-y) 2 = x2 - 2xy +y2 for x =4, Y =1

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Answer 1

Step-by-step explanation:

(4-1)2=4×2-2×4×1+1×2

6=8-8+2

6=2

8

Answer 2

Given,

x = 4, y = 1

LHS= (x-y)^2

=(4-1)^2

=3^2

=9

RHS= x^2-2xy+y^2

=4^2-2.4.1+1^2

=16-8+1

=9

Therefore,

(x-y)^2=x^2-2xy+y^2

verified