Question

Find f(-1,2) for x² + 2xy + y².
a) 1
b) 2
c) 4
d) -1

Answer 1

To find f(-1,2) for x² + 2xy + y², substitute the given values for x and y into the equation to get f(-1,2) = 1. The correct answer is a) 1.

Step-by-step explanation:

To find f(-1,2) for x² + 2xy + y², we need to substitute the given values for x and y into the equation.

So, replacing x with -1 and y with 2, we have:

f(-1,2) = (-1)² + 2(-1)(2) + (2)² = 1 - 4 + 4 = 1.

Therefore, the correct answer is a) 1.