2X- 10 =30 solve for X

2x - 10 = 30
2x = 40
x = 20

X = 20Step-by-step explanation:

First, add 10 to both sides.

2X - 10 + 10 = 30 + 10

2X = 40

Finally, we have to divide both sides by 2!

2X / 2 = 40 / 2

X = 20

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*