The polynomial in standard form after subtraction will be 12a² - 9a + 5.
A polynomial expression is an algebraic expression with variables and coefficients. Unknown variables are what they're termed. We can use addition, subtraction, and other mathematical operations. However, a variable is not divisible.
It simply implies subtracting something from an entity, group, location, etc. Subtracting from a collection or a list of ways is known as subtraction.
The polynomial is given below.
-7a² + 3a - 9 and 5a² - 6a - 4
Subtract -7a² + 3a - 9 from 5a² - 6a - 4, then we have
(5a² - 6a - 4) - (-7a² + 3a - 9)
Simplify the equation, then we have
(5a² - 6a - 4) - (-7a² + 3a - 9)
5a² - 6a - 4 + 7a² - 3a + 9
12a² - 9a + 5
The polynomial in standard form after subtraction will be 12a² - 9a + 5.
More about the polynomial link is given below.
https://brainly.com/question/17822016
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