Question

solve the equation 2a^2-18a=0

Answer 1

first, divided by 2 from both sides :
(2a^2-18a)/2 =0/2
a^2 - 9a = 0
take the common, is a
then factor out!
a(a - 9) = 0

Answer 2

solve for a

Answer 3

Simplifying
2a2 + -18a = 0

Reorder the terms:
-18a + 2a2 = 0

Solving
-18a + 2a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '2a'.
2a(-9 + a) = 0

Ignore the factor 2.
Subproblem 1
Set the factor 'a' equal to zero and attempt to solve:

Simplifying
a = 0

Solving
a = 0

Move all terms containing a to the left, all other terms to the right.

Simplifying
a = 0
Subproblem 2
Set the factor '(-9 + a)' equal to zero and attempt to solve:

Simplifying
-9 + a = 0

Solving
-9 + a = 0

Move all terms containing a to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + a = 0 + 9

Combine like terms: -9 + 9 = 0
0 + a = 0 + 9
a = 0 + 9

Combine like terms: 0 + 9 = 9
a = 9

Simplifying
a = 9
Solution
a = {0, 9}

Answer 4

2a(a-9)=0
then you will get a=0 and a=9..

Answer 5

2a=0,so a=0/2 will get 0..
a-9=0,bring -9 to the right become +9,so a=9..