Which expressions are equivalent to -5x - 15 + 25x - 30? Choose ALL that apply. −5(2 − 3+52 – 6) −5(2 – 5x + 9) −5(2+3 – 5x – 6)
1 answer:
You might be interested in
By the fundamental theorem of algebra, we can write
Expanding the right hand side, we get
We want to be an integer, which means
must also be integers. This means
must be factors of 10. There are several possibilities:
So there are 4 possible values for : -11, -7, 7, and 11.