Answer:
10x^2+13x+5
Step-by-step explanation:
(7x^2− 2x + 9) + (3x^2+ 15x − 4)
Combine like terms
(7x^2+3x^2− 2x+ 15x + 9 − 4)
10x^2+13x+5
Answer:
[tex]10x^{2} + 13x + 5[/tex]
Step-by-step explanation:
In this equation, you need to add all the like terms. For example, 7x² and 3x² are like terms, since they both are being squared.
First find the like terms:
7x² + 3x²
-2x + 15x
9 - 4
Now simplify the above equations.
7x² and 3x² is equal to 10x². You only have to add the whole number, the exponent stays the same.
-2x + 15x is equal to 13x. Since -2 is negative, you can simply take away two from 15, which is 13, making it 13x.
9 - 4 is equal to 5.
Now add everything together.
[tex]10x^{2} + 13x + 5[/tex]
Your answer is 10x² + 13x + 5.
