Question

Which of the following expressions is not equivalent to 5a + 30? O A. 5(a + 6) O B. (5.a) + (5 • 30) O C. 2a + a - 2 + 2a + 32 O D. 6a + 15 - a + 15

Answer 1

`5a+30`

Tou factorize:

-common factor: 5

`\begin{gathered} 5(a+6) \\ =5a+30 \end{gathered}`
`\begin{gathered} 6a+15-a+15 \\ =5a+30 \end{gathered}`
`\begin{gathered} 2a+a-2+2a+32 \\ =5a+30 \end{gathered}`
`\begin{gathered} (5\cdot a)+(5\cdot30) \\ =5a+150 \end{gathered}`