Question

15r-3r+6 15r - 3r 12r + 6 12r - 6 6(2r + 1)

Answer 1

The answer is "
`\bold{-3(12r^2-369r+22)}\\`"

Step-by-step explanation:

In the given question, there is mistype error in the equation so, the correct equation can be defined as follows:

`\Rightarrow15r-3r+615r-3r12r+612r-66\left(2r+1\right) \\\\`

Solve the above equation:

`\Rightarrow 15r-3r+615r-36r^2+612r- 132r-66 \\\\\Rightarrow 1242r-36r^2- 135r-66 \\\\\Rightarrow 1242r- 135r-36r^2-66 \\\\\Rightarrow 1107r-36r^2-66 \\\\\Rightarrow -36r^2+1107r-66 \\\\\Rightarrow -3(12r^2-369r+22) \\\\`