Simplify the expression ( power 5 -2X power to y power 7 Francis answers 18x power 6y power 12 7 x 8 1 power 8 y power 12 - 18x power 6y power 12 - 18x power 8y power 12

To simplify the expression, we can combine like terms.

The term "18x^6y^12" appears twice in the expression.

Therefore, the simplified expression is:

18x^6y^12 - 18x^8y^12.