Answer:
the first one
Step-by-step explanation:
the answer is 2,220
you first aline 185 × 12 like so 185
× 12
then you need to multiply everything
After factoring
the solutions are x=0 , x=3, x= -3
Step-by-step explanation:
We need to solve by factoring:
![3x^3-27x=0](https://tex.z-dn.net/?f=3x%5E3-27x%3D0)
Solving:
![3x^3-27x=0](https://tex.z-dn.net/?f=3x%5E3-27x%3D0)
Taking 3x common:
![3x(x^2-9)=0](https://tex.z-dn.net/?f=3x%28x%5E2-9%29%3D0)
Now using formula ![a^2-b^2=(a-b)(a+b)](https://tex.z-dn.net/?f=a%5E2-b%5E2%3D%28a-b%29%28a%2Bb%29)
![3x((x)^2-(3)^2)=0\\3x(x-3)(x+3)=0](https://tex.z-dn.net/?f=3x%28%28x%29%5E2-%283%29%5E2%29%3D0%5C%5C3x%28x-3%29%28x%2B3%29%3D0)
![3x=0\,\,and\,\,x+3=0\,\,and\,\,x-3=0\\x=0\,\,and\,\,x=-3\,\,and\,\,x=3\\](https://tex.z-dn.net/?f=3x%3D0%5C%2C%5C%2Cand%5C%2C%5C%2Cx%2B3%3D0%5C%2C%5C%2Cand%5C%2C%5C%2Cx-3%3D0%5C%5Cx%3D0%5C%2C%5C%2Cand%5C%2C%5C%2Cx%3D-3%5C%2C%5C%2Cand%5C%2C%5C%2Cx%3D3%5C%5C)
So, After factoring
the solutions are x=0 , x=3, x= -3
Keywords: Factorization
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It can be either one of the bottom two choices