Final answer:
To write the expression 5x^10 - 4x^5 + 3 in quadratic form, we need to factor out a common term from the first two terms. The expression cannot be simplified further into quadratic form.
Step-by-step explanation:
To write the expression 5x^10 - 4x^5 + 3 in quadratic form, we need to factor out a common term from the first two terms. The highest power of x in the expression is x^10, so we can factor out x^5:
5x^5(x^5 - 4) + 3
The expression cannot be simplified further into quadratic form, so the answer is None of the given options.