Draw quick pictures. write how many hundreds, tens, and ones in all. write the number. add 231 and 218

There are 4 hundreds 4 tens and 9 ones.

Work: 231 + 218 = 439

Hope this helps!

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!