Question

08- Efetue as seguintes adições de polinômios: 2 2 a) (2 x ²-9x + 2) + (3 x ² + 7 x − 1) 2 b) (5 x ² + 5 x − 8) + (−2 x ² + 3x - 2) c) (3 x-6y + 4)+(4x+2y-2) 2 - 2 - d) (5 x ² − 7 x + 2) + ( 2 x ² + 7 x − 1) e) (4 x + 3y + 1) +(6x-2y-9)​

Answer 1

a) (2x²-9x+2)+(3x²+7x-1)

$2x^2 +3x^2 -9x +7x +2 -1\\5x^{2} -2x +1$

b) (5x²+5x-8)+(-2x²+3x-2)

$5x^{2} -2x^{2} +5x+3x-8-2\\3x^{2} +8x -10$

c) (3x-6y+4)+(4x+2y-2)

$3x + 4x -6y+2y+4-2\\7x -4y +2$

d) (5x²-7x+2)+(2x²+7x-1)

$5x^{2} +2x^{2} -7x+7x+2-1\\7x^{2} +1$

e)(4x+3y+1)+(6x-2y-9)

$4x+6x+3y-2y+1-9\\10x + y -8$