Question

y=2x(4+x)-2
X=3
Someone help please

Answer 1

y=2x(4+3)-2
=2x7-2
=14-2
=12

Answer 2

Answer:

$x=3$    and   $y=40$

Step-by-step explanation:

Given:

  $y=2x(4+x)-2$    Equation:1

   $x=3$                      Equation:2

Putting the value of 'x' in Equation:1 to find the value of 'y'

   $y=2x(4+x)-2$

Solving the equation by putting 'x=3'

       $y=2(3)(4+3)-2$

          $y=6(7)-2$

           $y=42-2$

           $y=40$

So, the values are :  $x=3$    and   $y=40$