Question

P(x) 3x^2 + 5x^2 + 4x-7 and
q (x)=6x^3+ 2x^2-9x-5
Find P(x)+ q (x) and P[x]-q(x)​

Answer 1

Answer:

P(x) + q(x)

= (3x² + 5x² + 4x - 7) + (6x³ + 2x² - 9x - 5)

= 3x² + 5x² + 4x - 7 + 6x³ + 2x² - 9x - 5

= 6x³ + 10x² - 5x - 12

P(x) - q(x)

= (3x² + 5x² + 4x - 7) - (6x³ + 2x² - 9x - 5)

= 3x² + 5x² + 4x - 7 - 6x³ - 2x² + 9x + 5

= -6x³ + 6x² + 13x - 2