Final answer:
The sum of the expressions 9x^2+5x+8 and 9x-7 is 9x^2 + 14x + 1, which is obtained by combining like terms.
Step-by-step explanation:
To find the sum of the two expressions 9x^2+5x+8 and 9x-7, you combine like terms.
Since there is no x^2 term in the second expression, the x^2 term remains unchanged in the sum.
The x terms (5x and 9x) are like terms and can be combined, and the constant terms (8 and -7) are also like terms and can be combined as well.
So, adding the coefficients of the like terms, we get:
- The x^2 term: 9x^2
- The x term: 5x + 9x = 14x
- The constant term: 8 - 7 = 1
Therefore, the sum of the two expressions is 9x^2 + 14x + 1.
Complete question:
Find the sum of 9x^2+5x+8 and 9x-7