Question

What must be added to 2x3 – 4x + 9 to get 5x2 -13?​

Answer 1

Step-by-step explanation:

2(3)-4x+9+x=5(2)-13

6-4x+9+x=10-13

15-4x+x=-3

-4x+x=-3-15

-4x+x=-18

x+x=-18/-4

x+x=9/2

2x=9/2

x=9/2(1/2)

x=9/4