3 years ago

I solved the problem but I'm not sure if I got it right so can you guys help me with it?

1 answer:

Lerok [7]3 years ago

6 0

Sure buddy! -4/9 + 1/2 is 1/8 in exact form. In decimal form it is 0.05 (bar notation over 5)

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Anna [14]

Answer:

The answer is D.

Step-by-step explanation:

First you have to get rid of brackets by expanding :

$3 {q}^{2} + {r}^{3} + 5r - 8q + 2( {q}^{2} + r)$

$= 3 {q}^{2} + {r}^{3} + 5r - 8q + 2 {q}^{2} + 2r$

Next you have to simplify by collecting like terms :

${r}^{3} + 3 {q}^{2} + 2 {q}^{2} + 5r + 2r - 8q$

$= {r}^{3} + 5 {q}^{2} - 8q + 7r$

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Step-by-step explanation:

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Step-by-step explanation:

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