Type the correct answer in each box.

1. (3x² - 7x + 14) + (5x² + 4x -6) = B

2. (2x² - 5x - 3) + (-10x² + 2x + 7) = A

3. (12x² - 2x - 13) + (-4x² + 5x + 9) = C

Step-by-step explanation:

(3x² - 7x + 14) + (5x² + 4x -6)    (We can simplify this since there are like terms)

= 8x² - 3x + 8    (This is denoted in option B so the answer to the first question is B)

(2x² - 5x - 3) + (-10x² + 2x + 7)    (We can simplify this since there are like terms)

= -8x² - 3x + 4    (This is denoted in option A so the answer to the second question is A)

(12x² - 2x - 13) + (-4x² + 5x + 9)    (We can simplify this since there are like terms)

= 8x² + 3x - 4    (This is denoted in option C so the answer to the third question is C)