Question

What is the value of 7x(3x+x), when x =8?

Answer 1

If x equals 8, 7(8) times (24 + 8), simplifying to 56 times 32

the answer is 1792

Answer 2

It is a bit confusing, so i will do the equation both ways:

1 way : 

 7·8(3·8+8)
=7·8(24+8)
=7·8(32)
=56(32)
=1960

2 way: 

7(3·8+8)
7(24+8)
7(32)
224