Please look at the screenshot below, for some reason Brainly won't let me post my answer.
What I mean about "not fully written" is its impartial. It didn't ask us something like "find how many bracelets she needs to sell"
8. Which statement can be represented by the equation shown? 9x-2=8x
1 answer:
You might be interested in
Answer:
x = 1 or x = ± i
Step-by-step explanation:
Note the sum of the coefficients
1 - 1 + 1 - 1 = 0
This indicates that x = 1 is a root, thus (x - 1) is a factor
Using long division or synthetic division, then
x³ - x² + x - 1 = (x - 1)(x² + 1), thus
(x - 1)(x² + 1) = 0
Equate each factor to zero and solve for x
x - 1 = 0 ⇒ x = 1
x² + 1 = 0 ⇒ x² = - 1 ⇒ x = ± = ± i