Variables
What is the answer to this math equation if x = 3?:
2(3x)
2(3x) = 18
2(3*3)
2(9)
18
What is the square root of 9?
3, because 3 * 3 = 9
|-2| = ?
2 is the answer.
If a number is in the absolute value bars, or ||, it's always going to become a positive number.
-x = 1, so what is x?
x = -1, since you just multiply by -1 for each side.
-x (* -1) = 1 (* -1)
x = -1
x = 14
-x - _/9
Hint: _/<Number> is "the square root of," and _3/ is "the cube root of."
The solution is -17
-14 - _/9
-14 - 3
-17
What is x in this math equation?:
2x + 7 = 19
x = 6
2x + 7 (- 7) = 19 (- 7)
2x (/2) = 12 (/2)
x = 6
What is the cube root of 8?
2, because 2 * 2 * 2 = 8
|284| + |-24| = ?
The answer is 308.
Since -24 becomes positive, you would add it with 284. Remember, any number in these || are always going to become positive, no matter what.
-(_3/27)
See question 1 for the category "Mixtures of All Topics" for more info on this.
Answer = 3
Look closely; the negative sign to the left of the expression "the cube root of 27" turns that answer negative. So since 3 * 3 * 3 = 27, it would become -3 instead because of the negative sign.
_3/(273)
Hint: Do the equation in the parenthesis first!
Answer = 27
Anything that is cubed and then cube rooted is just itself.
Weird, I know.
x = 7, so what is y?
x + y = 10
y = 3
7 + y = 10
7 (- 7) + y = 10 (- 7)
y = 3
25 = ?
(Hint: Multiply this number by itself some amount of times...)
Correct answer: 32.
21 = 2
22 = 4
23 = 8
24 = 16
25 = 32
See the pattern yet?
-(-33) = ?
33 is the answer.
Negative negative numbers are positive, and negative signs are basically just saying, "multiply this by -1".
-|-(_/64)|
-8 is the answer for this question.
A negative absolute value makes a negative number, and since the square root of 64 is 8, it would become -8.
Solve for x.
-(_/144) + x = 12
x = 0
z = 6, y = 17, and x = 8
x + yz = ?
Hint: Variables that are right next to each other are multiplied by each other.
Answer = 110
8 + 17(6)
8 + 102
110
232
This equals 529. It's just 23 * 23, remember!
-(-(-3))
It's -3
Since we have an odd amount of negative signs, the answer will be negative. With an even amount, it will instead be positive.
11x - _/142 = 19
x = 3
11x - 14 = 19
11x - 14 (+ 14) = 19 (+ 14)
11x (/ 11) = 33 (/ 11)
x = 3
Solve for x.
-x + _/4096 = 128
x = -64
Solve for x.
24x + 17 = 65
x = 2
24x + 17 (- 17) = 65 (- 17)
24x = 48
x = 2
_3/1000
is 10, since 10 * 10 = 100, then 100 * 10 = 1,000
|-(-(-23))|
23 is the answer.
It's absolute value with a negative number, so it's always positive!
x = 18
-|-x2|
-324
x = _3/8
_/(-x + (-7))
Well, you can't actually use a square root on negative numbers, so this would result in a mathematical error.
(Sorry.)