Question

8) Find the sum of 4 + 3x and 5 - 4x + 2 x ^ 2

Answer 1

Answer:

2x^2 - x + 9

Step-by-step explanation:

4 + 3x + (5-4x+2x^2)

= 2x^2 - x + 9

Answer 2

Here we have to add 4 + 3x and 5 - 4x + 2x²

Now, only those terms can be added or subtracted that have same variables

So, (4 + 3x) + (5 - 4x + 2x²) = 4 + 5 + 3x - 4x + 2x²

                                            = 9 - x + 2x²

                                            =  2x² - x + 9

Hence, the sum of (4 + 3x) and (5 - 4x + 2x²) will be 2x² - x + 9