Question

Rút gọn (x-4) (x-3) -x(x+5) +82

Answer 1

-12x + 94

Explanation:

Simplify:

`\left(x-4\right)\left(x-3\right)-x\left(x+5\right)+82`

`=x^2-7x+12-x\left(x+5\right)+82`

`=x^2-7x+12-x^2-5x+82`

`=x^2-x^2-7x-5x+12+82`

`=-7x-5x+12+82`

`=-7x-5x+94`

`=-12x+94`