Answer:
x= 3.5
Step-by-step explanation:
5*2x= 10x
5*7= 35
10x/10= x
35/10= 3.5
3.5= x
The answer is -9 + 9i. Hope this helped.
Answer:
x=4
Step-by-step explanation:
-(7-4x)=9
-7+4x=9
4x=16
x=4
Step-by-step explanation:

Distribute into 5x² into (3x +2).

The simplified expression is <em>15x³ + 10x²</em>