Answer: f(a-2) = 2a² - 14a + 28
Step-by-step explanation:
f(x) = 2x² - 6x + 8
you can take a-2 and substitute it for each x, which would look like this:
f(a-2) = 2(a-2)² - 6(a-2) + 8
then distribute those in ( )
f(a-2) = 2a² - 8a + 8 - 6a + 12 + 8
combine like terms
f(a-2) = 2a² - 14a + 28
Answer:
Step-by-step explanation:
<h3>Q1</h3>
<u>The ratios of corresponding sides of similar figures are equal:</u>
- x / 25 = 24 / 15
- x / 25 = 8 / 5
- x = 25*8/5
- x = 40
<h3>Q2</h3>
<u>Short sides are x and 15, long sides are 36 and 24. The ratios are same:</u>
- x / 15 = 36 / 24
- x / 15 = 3/2
- x = 15*3/2
- x = 22.5
Correct choice is C
f(x) means x = -2 if you multiply 1/2 by -2 you get -1
Y equals 3x-3 is the answer