284,492 views
39 votes
39 votes
May someone help me solve d and e.

May someone help me solve d and e.-example-1
User Bri Bri
by
3.0k points

1 Answer

18 votes
18 votes

Answer:

d.


x = 2 {y}^(2) - 4 \\ 2 {y}^(2) = x + 4 \\ \\ {y}^(2) = (x + 4)/(2) \\ \\ y = \frac{ + }{} \sqrt{ (x + 4)/(2) } \\ \\ y = \frac{ + }{} ( √(x + 4) )/( √(2) ) * ( √(2) )/( √(2) ) \\ \\ y = \frac{ + }{} \: ( √(x + 4) * √(2) )/( √(2) √(2) ) \\ \\ y = \frac{ + }{} ( √(2(x + 4)) )/(2) \\ \\ y =( √(2(x + 4)) )/(2) \\ \\ y = - ( √(2(x + 4)) )/(2)

e.


x = {(y - 5)}^(2)

with the root of both sides


√(x) = \sqrt{ {(y - 5)}^(2) } \\ \\ \frac{ + }{} √(x) = y - 5 \\ \\ y = √(x) + 5 \\ y = - √(x) + 5

I hope I helped you^_^

User Flosculus
by
2.7k points