Combining like terms by adding and rearranging from highest exponent power to lowest is; 6x³ - 8x + 9
We want to simplify the algebraic expression given as;
2x + 7 + 6x³ - 1 + 3 - 6x - 4x
Now, when we are asked to combine like terms, it means we combine similar terms that have same exponent powers.
From the given expressions, we see that we have;
2x + 7 + 6x³ - 1 + 3 - 6x - 4x
Now, similar terms are grouped as;
2x, -6x, -4x
7, -1, +3
Thus, simplifying the given expression by combining like terms gives us;
6x³ + (7 - 1 + 3) + (2x - 6x - 4x)
= 6x³ + 9 - 8x
Rearranging from highest exponent power to lowest is;
6x³ - 8x + 9
Read more about Simplifying Algebraic Expressions at; https://brainly.com/question/4344214
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