POLINÔMIOS - 8º ANO - 01/2018

01. Efetue as seguintes adições de polinômios:
a) (2x²-9x+2)+(3x²+7x-1) =
b) (5x²+5x-8)+(-2x²+3x-2) =
c) (3x-6y+4)+(4x+2y-2) =
d) (5x²-7x+2)+(2x²+7x-1) =
e) (4x+3y+1)+(6x-2y-9) =
f) (2x³+5x²+4x)+(2x³-3x²+x) =
g) (5x²-2ax+a²)+(-3x²+2ax-a²) =
h) (y²+3y-5)+(-3y+7-5y²) =
i) (x²-5x+3)+(-4x²-2x) =
j) (9x²-4x-3)+(3x²-10) =

02. Efetue as seguintes subtrações:

a) (5x²-4x+7)-(3x²+7x-1) =
b) (6x²-6x+9)-(3x²+8x-2) =
c) (7x-4y+2)-(2x-2y+5) =
d) (4x-y-1)-(9x+y+3) =
e) (-2a²-3ª+6)-(-4a²-5ª+6) =
f) (4x³-6x²+3x)-(7x³-6x²+8x) =
g) (x²-5x+3)-(4x²+6) =
h) (x²+2xy+y²)-(y²+x²+2xy) =
i) (7ab+4c-3a)-(5c+4a-10) =

03. Calcule os produtos:
a) 3(x+y) =
b) 7(x-2y) =
c) 2x(x+y) =
d) 4x (a+b) =
e) 2x(x²-2x+5) =
f) (x+5).(x+2) =
g) (3x+2).(2x+1) =
h) (x+7).(x-4) =
i) (3x+4).(2x-1) =
j) (x-4y).(x-y) =
k) (5x-2).(2x-1) =
l) (3x+1).(3x-1) =
m) (2x+5).(2x-5) =
n) (6x²-4).(6x²+4) =
o) (3x²-4x-3).(x+1) =
p) (x²-x-1).(x-3) =
q) (x-1).(x-2).(x-3) =
r) (x+2).(x-1).(x+3) =
s) (x³-2).(x³+8) =
t) (x²+2).(x²+6) =

04. Efetue as divisões:
a) ( 12x² - 8x) : (+2x) =
b) (3y³ + 6y²) : (3y) =
c) ( 10x² + 6x) : (-2x) =
d) (4x³ - 9x) : (+3x) =
e) ( 15x³ - 10x²) : (5x²) =
f) (30x² - 20xy) : (-10x) =
g) (-18x² + 8x) : (+2x) =
h) (6x²y – 4xy²) : (-2x) =

05. Efetue as Divisões:
a) ( x³ + 2x² + x ) : (+x) =
b) (x² + x³ + x⁴) : (+x²) =
c) (3x⁴ - 6x³ + 10x²) : (-2x²) =
d) (x⁷ + x⁵ + x³) : (-x²) =
e) (3x²y – 18xy²) : (+3xy) =
f) (7x³y – 8x²y²) : (-2xy) =
g) (4x²y + 2xy – 6xy²) : (-2xy) =
h) (20x¹² - 16x⁸ - 8x⁵) : ( +4x⁴) =
i) (3xy⁴ + 9x²y – 12xy²) : (+3xy) =

06. Calcule os quocientes:
a) ( x² + 5x + 6) : (x + 2) =
b) (x² - 7x + 10 ) : ( x - 2) =
c) (2x² + 6x + 4 ) : ( x + 1) =
d) ( x³ - 6x² + 11x – 6) : ( x – 3) =
e) ( 7x³ + 27x² - 3x + 4 ) : ( x + 4) =
f) (2x³ + 3x² - x – 2) : ( 2x – 3) =
g) ( x³ - 6x² + 7x + 4) : (x² - 2x – 1) =
h) (3x³ - 13x² + 37x – 50 ) : ( x² -2x + 5) =
i) ( 10x³ - 31x² + 26x – 3) : ( 5x² - 8x + 1) =
j) ( 4x⁴ - 14x³ + 15x² -17x + 5 ) : (x² - 3x + 1) =