Respuesta :

Step-by-step explanation:

put y in place of f(x)

or, y= 7x^2 + 6

now interchange x and y

or, x = 7y^2 +6

solve for y now

or, x- 6 =7y^2

or, x-6 = y^2

7

or, under square root √(x-6)/7 = y

so, inverse of f^-1(x) is √(x-6)/7