Question

Calcule:

a) A + B
b) A - B
c) A + C
d C - A
e) B + C
f) B - C

Answer 1

Resposta:

A) 6x^2+3x+4

B) -2x^2+7x+2

C) -x^2+4x+6

D) -5x^2-6x

E) x^2-3+4

F) 7x^2-x-2

Explicação passo a passo:

A) A+B

(2x^2+5x+3)+(4x^2-2x+1)

2x^2+5x+3+4x^2-2x+1 = 6x^2+3x+4

B) A-B

(2x^2+5x+3)-(4x^2-2x+1)

2x^2+5x+3-4x^2+2x-1

-2x^2+7x+2

C) A+C

(2x^2+5x+3)+(-3x^2-x+3)

2x^2+5x+3-3x^2-x+3

-x^2+4x+6

D) C-A

(-3x^2-x+3)-(2x^2+5x+3)

-3x^2-x+3-2x^2-5x-3

-5x^2-6x

E) B+C

(4x^2-2x+1)+(-3x^2-x+3)

4x^2-2x+1-3x^2-x+3

x^2-3x+4

F) B-C

(4x^2-2x+1)-(-3x^2-x+3)

4x^2-2x+1+3x^2+x-3

7x^2-x-2