If x=4

If x=4 and y=-3, what is the value of the expression x² + 2xy - 4x + 3y + y²?

Correct answer:

v =  -24

Step-by-step explanation:

x=4 y=−3  v=x2+2⋅ x⋅ y−4⋅ x+3⋅ y+y2=42+2⋅ 4⋅ (−3)−4⋅ 4+3⋅ (−3)+(−3)2=−24

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