1. not factorable
2. not factorable
3.(x+6)^2
Brand X costs $1.56 for 12 ounces
Brand X: cost of each ounce = $1.56 / 12 = $0.13
Brand Y costs 2 cents more per ounce, so the cost of brand Y per ounce= $0.13 + $0.02 = $0.15
The cost of 15 ounces of brand Y = $0.15 x 15 = $2.25
Answer
$2.25
The answer is C. Once you add the like terms x^2 and 4x^2 you get your answer.
Which two numbers add up to -80 and multiply to -81?
-81 and 1
Rewrite the expression using the above
(x^4 - 81)(x^4 + 1)
Rewrite x^4 - 81 in the form; a^2 - b^2, where a = x^2 and b = 9
((x^2)^2 - 9^2)(x^4 + 1)
Use the Difference of Squares: a^2 - b^2 = (a + b)(a - b)
(x^2 + 9)(x^2 - 9)(x^4 + 1)
Rewrite x^2 - 9 in the form a^2 - b^2, where a = x and b = 3
(x^2 + 9)(x^2 - 3^2)(x^4 + 1)
Use the Difference of Squares; a^2 - b^2 = (a + b)(a - b)
<u>(x^2 + 9(x + 3)(x - 3)(x^4 + 1)</u>
Answer:
a. 1.29
Step-by-step explanation: