To solve such problems, you should collect all the like terms together.
The simplified form of given expression is given by
Option D: [tex]5a^2 + 3b + 6a[/tex]
Given that:
To simplify the expression: [tex]7a^2 + 3b + 6a-2a^2[/tex]
Simplification:
We will gather the like terms and then deal with their coefficients.
It can be done as shown below:
[tex]7a^2 + 3b + 6a-2a^2 = (7a^2 - 2a^2) + 3b +6a = 5a^2 + 3b +6a[/tex]
Thus, the simplified form of the given expression is written as:
[tex]5a^2 + 3b + 6a[/tex]
Thus, option D: [tex]5a^2 + 3b + 6a[/tex] is correct.
Learn more about simplification of algebraic expression here:
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