Question

4. If x = 2, y = -1, then the value of x2 + 4xy + 4y2 is​

Answer 1

Answer:

0

Step-by-step explanation:

x2 + 4xy + 4y2

2^2 + 4*2*(-1) + 4*(-1)^2

4 - 8 + 4

0

Answer 2

Answer:

The value of the expression at  x = 2, y = -1 is 0

Step-by-step explanation:

Given expression is x²+ 4xy + 4y²

To find,

The value of the given expression at x = 2 and y =  -1

Solution

Let the given expression be p(x,y)

Required to find p(2,-1)

The value p(2,-1) is obtained by substituting the value of x = 2 and y = -1, in the given expression

p(2,-1) = 2²+ 4×2×-1 + 4(-1)²

= 4 - 8 +4

= 0

The value of the expression at  x = 2, y = -1 is 0

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