What is y in x equals 4y2 plus 6 when x equals 42?

Answer 1

In the equation x = 4y2 + 6 where x = 42, we need to substitute 42 for x and solve for y.

x = 4y2 + 6

42 = 4y2 + 6

42 - 6 = 4y2 + 6 - 6

36 = 4y2

36 / 2 = 4y2 / 2

18 = 4y

18 / 4 = 4y / 4

9 / 2 = y

4 1/2 = y (or 4.5 = y)