Question

Which expression is equivalent to 2 (a + 2b)- a - 2b?

Answer 1

it's linear expression cuz the highest power of the unknown is 1

Answer 2

• 
  `\bf a+2b`

Explanation:

`\tt 2 (a + 2b)- a - 2b`

Expand:-

`\tt 2a+4b-a-2b`

Combine like terms:-

`\tt 2a-a=\bf a`

`\tt a+4b-2b`

`\tt 4b-2b=\bf 2b`

`\tt a+2b`

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Hope this helps!