Question

Write an equivalent expression in standard form for

(6z-3)(8z+9)-13(45-7z-z2)

Answer 1

The answer is

`61z^2+121z-612`

Explanation:

Step one:

given data

The expression is given as

`(6z-3)(8z+9)-13(45-7z-z^2)`

let us open the bracket

`48z^2+54z-24z-27-585+91z+13z^2`

collect like terms we have

`48z^2+13z^2+54z-24z+91z-27-585`

`61z^2+121z-612`