Answer:
B and D
Step-by-step explanation:
if they had letters it would be
A B
C D
options B and D are similar
![Y= x^2 -5](https://tex.z-dn.net/?f=Y%3D%20x%5E2%20-5)
We need to solve for x, we need to get x alone
![Y= x^2 -5](https://tex.z-dn.net/?f=Y%3D%20x%5E2%20-5)
Lets start by removing -5
Add 5 on both sides
![y + 5= x^2 -5 + 5](https://tex.z-dn.net/?f=y%20%2B%205%3D%20x%5E2%20-5%20%2B%205)
![y + 5= x^2](https://tex.z-dn.net/?f=y%20%2B%205%3D%20x%5E2)
Now to isolate x , we need to remove the square from x
To remove square , take square root on both sides
![+-\sqrt{y+5} = \sqrt{x^2}](https://tex.z-dn.net/?f=%2B-%5Csqrt%7By%2B5%7D%20%3D%20%5Csqrt%7Bx%5E2%7D)
square and square root will get cancelled
![+-\sqrt{y+5} = x](https://tex.z-dn.net/?f=%2B-%5Csqrt%7By%2B5%7D%20%3D%20x)
So
and ![x = -\sqrt{y+5}](https://tex.z-dn.net/?f=x%20%3D%20-%5Csqrt%7By%2B5%7D)
Answer:
-12x - 10 or -2(6x +5)
Step-by-step explanation:
4x + 10 - 4(-4x + 5)
first, distribute the -4 among the parentheses
4x + 10 - 16x - 20
combine like terms
-12x - 10
if they want you to take it further, take out a -2
-2(6x + 5)
Answer:
is a Step-by-step explanation:
combination
A selection in which order has no importance.A mathematical symbol, or combination of symbols, representing a value, or relation. Example:
2
+
2
=
4
.equation
A mathematical statement that says two expressions have the same value; any number sentence with an
=
.
ordered pair
Set of two numbers in which the order has an agreed-upon meaning, such as the Cartesian coordinates
(
x
,
y
)
, where the first coordinate represents the horizontal position, and the second coordinate represents the vertical position.
solution
1. The value of a variable that makes an equation true.
2. In chemistry, a solution is a homogeneous mixture composed of only one phase.