Question

calcule os produtos entre monômios e polinômios

a) 3a . (a-1)=

b) 5x . (x+2)=

c) x . (x-1)=

d) 2a² . (4a³ + a² - a + 1)=​​​​

Answer 1

(A)

$3a . (a \: - \: 1)$

$3a .a \: - \: 3a$

${3a}^{2} - 3a$

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(B)

$5x . (x \: + \: 2)$

$5x . x \: + \: 5x.2$

${5x}^{2} + 5x.2$

${5x}^{2} + 10x$

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(C)

$x . (x \: - \: 1)$

$x . x - x$

${x}^{2} - x$

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(D)

${2a}^{2} . ({4a}^{3} + {a}^{2} - a + 1)$

${2a}^{2} . {4a}^{3} \: + \: {2a}^{2} . {a}^{2} \: - \: {2a}^{2}.a \: + {2a}^{2}$

${8a}^{5} \: + \: {2a}^{2} . {a}^{2} \: - \: {2a}^{2}.a \: + \: {2a}^{2}$

${8a}^{5} \: + \: {2a}^{4} \: - \: {2a}^{2}.a \: + \: {2a}^{2}$

${8a}^{5} \: + \: {2a}^{4} \: - \: {2a}^{3} \: + \: {2a}^{2}$