To get rid of
![x^{3}](https://tex.z-dn.net/?f=%20x%5E%7B3%7D%20)
, you have to take the third root of both sides:
![\sqrt[3]{x^{3}} = \sqrt[3]{1}](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7Bx%5E%7B3%7D%7D%20%3D%20%5Csqrt%5B3%5D%7B1%7D%20)
But that won't help you with understanding the problem. It is better to write
![x^{3}-1](https://tex.z-dn.net/?f=%20x%5E%7B3%7D-1%20)
as a product of 2 polynomials:
![x^{3}-1 = (x-1)\cdot (x^{2} +x +1)](https://tex.z-dn.net/?f=%20x%5E%7B3%7D-1%20%3D%20%28x-1%29%5Ccdot%20%28x%5E%7B2%7D%20%2Bx%20%2B1%29%20)
From this we know, that
![x-1 = 0 => x = 1](https://tex.z-dn.net/?f=%20x-1%20%3D%200%20%3D%3E%20x%20%3D%201%20)
is the solution. Another solutions (complex roots) are the roots of quadratic equation.
It would be 7:9 because if you divide each side by 4 then you can get it in simplest form
Answer:
0.0723
Step-by-step explanation:
To convert 7.23% into a decimal, you just need to divide 7.23 by 100, or just move the decimal point 2 times to the left.