Question

Q5. If P = 3x ^ 3 + 5x ^ 2 - 9x + 3 and Q = 5 - 4x + 3x ^ 2 - 2x ^ 3 Find 2P+Q​

Answer 1

Answer:

4x^3 + 13x^2 -22x + 11

Step-by-step explanation:

2P + Q = 2(3x ^ 3 + 5x ^ 2 - 9x + 3 ) + 5 - 4x + 3x ^ 2 - 2x ^ 3

           = 6x^3  + 10x^2 - 18x + 6 + 5 - 4x + 3x^2 -2x^3

           = 4x^3 + 13x^2 -22x + 11