What is the sum of the polynomials?
(7x3 – 4x2) + (2x3 – 4x2)
5x3
9x3
5x3 – 8x2
9x3 – 8x2

Last option is correct.

Step-by-step explanation:

Since we have given that

We need to find the sum of the polynomials:

So, we first collect the like terms:

Hence, the sum of polynomials is

Therefore, Last option is correct.

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation:

1

x = 1

step-by-step explanation:

0 ÷ x = 0

0 ÷ 1 = 0