Question

7. If x2 - xy + y = 15, and x = 2, find the value of y.
384-38°+9g.​

Answer 1

Answer:

${x}^{2} - xy + y = 15 \\ x = 2 \\ {(2)}^{2} - (2)y + y = 15 \\ 4 - 2y + y = 15 \\ 4 - 3y = 15 \\ - 3y = 15 - 4 \\ - 3y = 11 \\ - y = \frac{11}{3} \\ y = - \frac{ 11}{3}$

Answer 2

Step-by-step explanation:

2*2-2*y+y=15

4-2y+y=15

-2y+y=15-4

-2y+y=11

11-2=y+y

9=y2

3=y