Question

a. 3a - (2a +6) + (7- 5a)
b. -2pq - 3/4pq - 1/2pq + 5pq
c. f²g + 4fg² - 5fg + f²g

Answer 1

Reduza os termos semelhantes:

• a) -4a + 1
• b) 7/4pq
• c) 2f²g + 4fg² - 5fg

Termos semelhantes são termos que possuem a mesma parte literal.

• Como reduzir?

Para reduzir, vamos agrupar os termos semelhantes, conservar a parte literal e calcular os seus coeficientes.

• Letra a:

$\Large\boxed{\begin{array}{lr}\rm 3a-(2a+6)+(7-5a)\\\\\rm 3a-2a-6+7-5a\\\\\rm 3a-2a-5a-6+7\\\\\boxed{\green{\boxed{\rm -4a+1}}}\end{array}}$

• Letra b:

$\Large\boxed{\begin{array}{lr}\rm -2pq-\dfrac{3}{4}pq-\dfrac{1}{2}pq+5pq\\\\\rm -\dfrac{2pq}{1}-\dfrac{3pq}{4}-\dfrac{pq}{2}+\dfrac{5pq}{1}\\\\\rm -\dfrac{4\cdot 2pq}{4\cdot 1}-\dfrac{3pq}{4}-\dfrac{2pq}{2\cdot 2}+\dfrac{4\cdot 5pq}{4\cdot 1}\\\\\rm -\dfrac{8pq}{4}-\dfrac{3pq}{4}-\dfrac{2pq}{4}+\dfrac{20pq}{4}\\\\\rm\dfrac{7pq}{4}\\\\\boxed{\green{\boxed{\rm\dfrac{7}{4}pq}}}\end{array}}$

• Letra c:

$\Large\boxed{\begin{array}{lr}\rm f^{2}g+4fg^{2}-5fg+f^{2}g\\\\\rm f^{2}g+f^{2}g+4fg^{2}-5fg\\\\\boxed{\green{\boxed{\rm 2f^{2}g+4fg^{2}-5fg}}}\end{array}}$

✦ VEJA MAIS:

• https://brainly.com.br/tarefa/45294131
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• https://brainly.com.br/tarefa/45637556

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