Question

2 + y + 2-2-0,
62-44+52 - 3120
5x +2y +22=13​

Answer 1

Answer:

Likewise, since (3x + 2y - 22)² + (4x - 5y + 9)² = 0 , we know that 3x + 2y - 22 = 0 and 4x - 5y + 9 = 0

I'm going to ignore the first equation, 3x + 2y - 22 = 0

Instead, notice that, if we take the other equation, 4x - 5y + 9 = 0 and combine it with the given equation, 5x - 4y = 0, we can quickly find the value of x + y without having to solve for the individual values of x and y.

We have:

5x - 4y = 0

4x - 5y + 9 = 0

Rewrite the bottom equation as follows:

5x - 4y = 0

4x - 5y = -9

Subtract the bottom equation from the top equation to get: x + y = 9