Question

2.
Sendo A = 5x2 + 3x - 14 e B = 2x2 + 5x + 11, determine:
a.
A-B
b.
B-A
C.
2. (A-B).

Answer 1

Resposta:

Explicação passo-a-passo:

a ) 5x²+3x-14 - (2x²+5x+11)

5x²+3x-14 -2x²-5x-11

5x² - 2x² + 3x -5x -14 - 11

3x² -2x -25

b) 2x²+5x+11 - (5x²+3x-14)

2x²+5x+11 -5x²-3x+14

2x²-5x² +5x -3x +11 + 14

-3x² +2× + 25

c) 2. (5x²+3x-14 + 2x²+5x+11)

2. ( 5x²+2x² +3x +5x -14 +11)

2. (7x² +8x -3)

14x² + 16x -6