PLS HELP!!!
2 answers:
Answer:
The correct option is D) f + 6
Step-by-step explanation:
Consider the provided information.
Write an algebraic expression for the phrase.
We need to write an algebraic expression which represents "The sum of f and 6"
To represents the sum use the symbol "+"
The sum of f and 6 can be written as:
Hence, the correct option is D) f + 6
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Answer:
-4.5
Step-by-step explanation:
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