Question

Preciso de ajudaaaa




Dados os polinômios A= 4x² - 6x-2, B= 5x² - 3 x+1 c = -x+5x+5, determine:

A) A+B=

B) C+A

C) A-C=

D) 3x². (A)

E) 7x. (B)

Answer 1

A+B
4x^2 - 6x -2 + 5x^2 -3x +1
9x^2 -9x + 6

C+A
-x+5x+5 + 4x^2 -6x -2
4x^2 -2x +3

A-C
4x^2 -6x -2 -(-x +5x +5)
4x^2 -6x -2 + x -5x -5
4x^2 -10x -7

3x^2 .(A)
3x^2 . (4x^2 -6x -2)
12x^4 -18x^3 -6x^2

7x . (B)
7x .(5x^2 -3x +1)
35x^3 -21x^2 +7x