Question

efetue as multiplicações monômios
a) 3x (x²-2x+3) =

b) 2 (a²+3a-4) =

c) 5a² (a³-2) =

d) 4xy (3x²-y =

e) 3x³ (2x²+7x-8 =

f) 7y⁴ (3y6-2y3+y) =

g) 2m (3m²-5m+7) =

h) 4x² (5x-3) =

i) -6x (5x+7x²) =

j) 5x⁷ (2x⁵-3x) =

k) -3a³ (a⁴-2a+1) =

l)5a²b³ (4a³-2b²) =

m) x²y (x²-3xy²+y²) =

n) a (2x3-3a) =​

Answer 1

a) 3x(x²-2x+3) = 3x³-6x²+9x

b) 2(a²+3a-4) = 2a²+6a-8

c) 5a²(a³-2) = 5a⁵-10a²

d) 4xy(3x²-y) = 13x³y-4xy²

e) 3x³(2x²+7x-8) = 6x⁵+21x⁴-24x³

f) 7y⁴(3y⁶-2y³+y) = 21y¹⁰-14y⁷+7y⁵

g) 2m (3m²-5m+7) = 6m³-10m²+14m

h) 4x²(5x-3) = 20x³-8x²

i) -6x(5x+7x²) = -30x²-42x³

j) 5x⁷(2x⁵-3x) = 10x¹²-15x⁸

k) -3a³(a⁴-2a+1) = -3a⁷+6a⁴-3a³

l)5a²b³(4a³-2b²) = 20a⁵b³-10a²b⁵

m) x²y(x²-3xy²+y²) = x⁴y-3x³y³+x²y³

n) a(2x³-3a) = 2ax³-3a²

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12/06/22