Question

Please Solve for x
y=x^(2)+2x-3

Answer 1

try to factor it

Answer 2

*and set it to 0

Answer 3

So (x-3)(x+1)=y

Answer 4

you can either factor or use quadratic equation whichever you prefer.
factoring is faster so...
-1 and 3
(x-1)(x-3)

Answer 5

so x is 1 and 3

Answer 6

but im trying to take the derivative of the inverse function

Answer 7

Prob. should have said that in the beginning :)

Answer 8

what is the inverse function of the equation?

Answer 9

my homework says to use the formula for the derivative of the inverse function to compute f(-3)

Answer 10

To compute f(-3) or f^(-1) (-3) ?
That is. f(-3) or evaluate inverse function at x = -3

Answer 11

is the (2)+2x-3 an exponent the x?

Answer 12

write it exactly how your hw says it

Answer 13

You don't have to factor it if you know the 2 Tips for quick solving quadratic equations;
Tip 1. When a + b + c = 0, one real root is (1) and the other is (c/a).
In your example: x^2 + 2x - 3 = 0, a + b + c = 0, then one root is (1) and the other is (-3).
TiP 2. When a - b + c = o, then one root is (-1) and the other is (-c/a).