Answer: ![5x^2-x+4](https://tex.z-dn.net/?f=5x%5E2-x%2B4)
Step-by-step explanation:
In addition of polynomials, you only have to add the like terms.
Remember the multiplication of signs:
![(+)(+)=+\\(-)(-)=+\\(-)(+)=-](https://tex.z-dn.net/?f=%28%2B%29%28%2B%29%3D%2B%5C%5C%28-%29%28-%29%3D%2B%5C%5C%28-%29%28%2B%29%3D-)
Then, given the polynomial
and the polynomial
, you can find the sum of them by adding the like terms.
Observe the procedure below:
![(12x^2+3x+6)+(-7x^2-4x-2)=12x^2+3x+6-7x^2-4x-2=5x^2-x+4](https://tex.z-dn.net/?f=%2812x%5E2%2B3x%2B6%29%2B%28-7x%5E2-4x-2%29%3D12x%5E2%2B3x%2B6-7x%5E2-4x-2%3D5x%5E2-x%2B4)
Therefore, the sum is:
![5x^2-x+4](https://tex.z-dn.net/?f=5x%5E2-x%2B4)
B because the amount of money they earn per hour multiplied by how many hours they worked is equal to what they earned in total
Answer:
22.5 hours
Step-by-step explanation:
191.25 divided by 8.50 hours will get you the total amount of hours she worked
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Value of x is used to consider unknown value. The letter “x” is commonly used in algebra to indicate an unknown value. It is referred to as a “variable” or, in some cases, a “unknown.” In x + 2 = 7, x is a variable