Answer:
RT
Step-by-step explanation:
For #1 you're just plugging in the numbers that are in the parentheses for x.
For example:
f(2)
Take the given equation to plug in for x:
x^2-4x+5
(2)^2-4(2)+5
And from there you get the answer. Your final answer will look like this:
f(2)=? {the answer you got when you plugged in}
Answer:
8.25
Step-by-step explanation:
(8x 8) + (2x2) = x ^2
64 + 4 = x2
x = √68
x = 8.25
Step-by-step explanation:
(a○b)(x) is the same as a(b(x)).
it is really that simple.
first you calculate the result of the inner function, and then that result is the input for the outer function.
that's it.
so,
(w○u)(2) = w(u(2))
u(2) = -2 -1 = -3
w(-3) = 2×(-3)² + 1 = 2×9 + 1 = 19
so, 19 is the first answer.
(u○w)(2) = u(w(2))
w(2) = 2×2² + 1 = 2×4 + 1 = 9
u(9) = -9 - 1 = -10
so, -10 is the second answer.
I think it is 1.6
not 100% sure
