3-Efetue as adições e subtrações com polinômios:
a)(6x2 - 5x + 3) + (2x2 + 4x - 5) =
b)(7x2 - 5x + 3) + (2x2 + 5x + 4) =
c) (4x2 + 5x + 7) + (4x2 + 4x - 5) =
d)(7x2 - 8x + 4) + (5x2 - 2x - 11) =
e) (8x2 - 4x - 6) + (3x2 - 2x + 7) =
f) (9x2 - 5x + 6) + (3x2 + 4x - 12) =
g) (-2x2 + 8x - 7) – (4x2 – 3x – 7) =
h)(2x2 + 5x-6)-(-2x2 - 6x + 7) =
i) (7x2 + 4x + 5)-(3x2 - 5x + 6) =
j) (4x2 – 5x + 7)-(3x2 - 8x - 7) =
k) (-4x2 + 7x + 5)-(-2x2 + 6x + 4)-(3x2 + 4x - 5) =
L) (5x2 + 7x - 6) - (4x2 – 9x + 7) + (3x² +8x + 6) =
m)(5x2 + 4x + 3)-(-3x2 - 6x + 7) + (-4x2 + 4x - 5)
n) (9x2 - 5x + 4) - (2x2 + 5x - 1) - (5x2 + 6x - 4) =
o) (3x2 - 5x + 7) + (-5x2–5x + 7) + (6x2 - 5x + 8)
me ajudar por favor
Respostas
Resposta:Segue as contas abaixo na explicação
Explicação passo-a-passo:
a)(6x² - 5x + 3) + (2x² + 4x - 5) = b)(7x² - 5x + 3) + (2x² + 5x + 4) =
6x²-5x+3+2x²+4x-5 7x²-5x+3+2x²+5x+4
8x²-x-2 9x²+7
c) (4x² + 5x + 7) + (4x² + 4x - 5) = d)(7x² - 8x + 4) + (5x² - 2x - 11) =
4x²+5x+7+4x²+4x-5 7x²-8x+4+5x²-2x-1
8x²+9x+2 12x²-10x+3
e) (8x² - 4x - 6) + (3x² - 2x + 7) = f) (9x² - 5x + 6) + (3x² + 4x - 12) =
8x²-4x-6+3x²-2x+7 9x²-5x+6+3x²+4x-12
11x²-6x+1 12x²-x-6
g) (-2x² + 8x - 7) – (4x² – 3x – 7) = h)(2x² + 5x-6)-(-2x² - 6x + 7) =
-2x²+8x-7-4x²+3x+7 2x²+5x+6+2x²+6x-7
-6x²+11x 4x²+11x-1
i) (7x² + 4x + 5)-(3x² - 5x + 6) = j) (4x² – 5x + 7)-(3x² - 8x - 7) =
7x²+4x+5-3x²+5x-6 4x²-5x+7-3x²+8x+7
4x²+9x-1 x²+3x+14
k) (-4x² + 7x + 5)-(-2x² + 6x + 4)-(3x² + 4x - 5) =
-4x²+7x+5+2x²-6x-4-3x²-4x+5
-7x²+2x²+7x-10x+10-4
-5x²-3x+6
L) (5x² + 7x - 6) - (4x² – 9x + 7) + (3x² +8x + 6) =
5x²+7x-6+4x²+9x-7+3x²+8x+6
12x²+24x-7