What is the simplified expression (x + 2y ? 5z) ? (x ? 6y + 4z)
The simplified version of the equation is 8y ? 9z. To get this, we open up the brackets so that we have x + 2y ? 5z ? x + 6y ? 4z. We put the like terms together to have x ? x + 2y + 6y ? 5z ? 4z, which is 8y ? 9z.