Question

Simplify: -2w² -11+ 4w² -9
(please show your work)

Answer 1

`=2w^2-20`

Explanation:

`\mathrm{Group\:like\:terms}:`

`-2w^2-11+4w^2-9`

`\mathrm{Subtract\:the\:numbers:}\:-11-9=-20`

`=-2w^2+4w^2-20`

`\mathrm{Add\:similar\:elements:}\:-2w^2+4w^2=2w^2`

`=2w^2-20`