Answer:
11x³ – 2x² + 3x + 11
Step-by-step explanation:
From the question given above:
We are to find the sum of:
4x³ + 2x² – 4x + 3 and 7x³ – 4x² + 7x + 8
To add the above polynomials together we must recognise that we can only add like terms together. The sum of the above polynomials can be obtained as follow:
. 4x³ + 2x² – 4x + 3
+ 7x³ – 4x² + 7x + 8
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
= 11x³ – 2x² + 3x + 11
Thus, the sum of 4x³ + 2x² – 4x + 3 and 7x³ – 4x² + 7x + 8 is 11x³ – 2x² + 3x + 11