Answer:
![- 6x^6+ 4x^4 -3x^3+4x^2 +12](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uwxf1oowtqwmtumq9415ii5hto6y7oxg84.png)
Explanation:
![4x^2 - 6x^6 + 2x^3 +12 - 5x^3 + 4x^4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/qxljimxia1z9m1dgsbk2foogri3bp951bw.png)
WE need to write the polynomial in standard form
Standard form of the polynomial is the polynomial that start with highest exponent. Standard form has decreasing order of exponent.
-6x^6 is the highest exponent
now we write the terms with exponent decreasing order
![4x^2 - 6x^6 + 2x^3 +12 - 5x^3 + 4x^4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/qxljimxia1z9m1dgsbk2foogri3bp951bw.png)
![4x^2 - 6x^6 + 2x^3 +12 - 5x^3 + 4x^4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/qxljimxia1z9m1dgsbk2foogri3bp951bw.png)
First we combine like terms
![4x^2 - 6x^6 -3x^3 +12 + 4x^4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/udy1npp8ik40t5c87no3jwscwlviptztbw.png)
![- 6x^6+ 4x^4 -3x^3+4x^2 +12](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uwxf1oowtqwmtumq9415ii5hto6y7oxg84.png)
The above polynomial is in standard form