Find the inverse for the linear function 2) f(x) = -2x+3

Step-by-step explanation:

To find the inverse of f(x) , equate f(x) to y

That's

y = f(x)

Next interchange the terms that's x becomes y and y becomes x

That's

Solve for y

Move 3 to the other side of the equation

That's

Divide both sides by - 2

We have the final answer as

Hope this helps you

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15