Question

If 3x + 9 = 48, then (x + 2) (x – 1) is equal to

Answer 1

Answer:

The answer is 180

Step-by-step explanation:

Given  $3x+9=48$

         $\Rightarrow 3x=48-9\\\Rightarrow 3x=39\\\Rightarrow x=\frac{39}{3}=13$

Therefore $(x+2)(x-1)$

                $=(13+2)(13-1)$

                $=15\times 12=180$