# How can the addition of a parenthesis be used to increase the value of the following expression?: 12-3^4-2/7+1

Apr 28, 2016

If you put the expression $12 - 3$ in brackes, the value will increase.

#### Explanation:

The original expression is:

$12 - {3}^{4} - \frac{2}{7} + 1 = 12 - 81 + \frac{5}{7} = - 68 \frac{2}{7}$

If you put $12 - 3$ in brackets the order of the operation changes, and so does the value:

${\left(12 - 3\right)}^{4} - \frac{2}{7} + 1$

Now first we have to calculate the value of expression in brackets:

${\left(12 - 3\right)}^{4} - \frac{2}{7} + 1 = {9}^{4} - \frac{2}{7} + 1 =$
$6561 - \frac{2}{7} + 1 = 6560 \frac{5}{7} + 1 = 6561 \frac{5}{7}$