Remark
You'll see it a whole lot easier if you make a substitution so that it looks like something you have already seen
Solution
let y = x^2
x^4 = x^2 * x^2
x^4 = y * y
x^4 = y^2
Now the expression becomes
y^2 + 8 y - 9 = z
(y + 9)(y - 1) = z
Now put the x^2 back in.
(x^2 + 9) ( x^2 - 1) = z
x^2 - 1 becomes x + 1 and x - 1. At this level x^2 + 9 can't be factored.
Answer
(x^2 + 9) (x + 1)(x - 1)
Step-by-step explanation:
9-2x=-1
-2x=-10
x=5
the answer is 5 because if you divide a negative number with negative number it will turn to positive
Answer: 1/8
Step-by-step explanation:
The reason why its 1/8 is because 32 times 1/8= 4
Answer:
4
Step-by-step explanation:
4^2 is 4x4 aka squared
Answer: 43.988
Step-by-step explanation: The formula for the circumference of a circle is the diameter multiplied by pi. Since the diameter is 14 and it is telling us to use 3.142 as pi, we can multiply the two and get the answer.
