-7a(4a-4)=

Solution for -7a(4a-4)= equation:

Simplifying
-7a(4a + -4) = 0

Reorder the terms:
-7a(-4 + 4a) = 0
(-4 * -7a + 4a * -7a) = 0
(28a + -28a2) = 0

Solving
28a + -28a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '28a'.
28a(1 + -1a) = 0

Ignore the factor 28.
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 '(1 + -1a)' equal to zero and attempt to solve:

Simplifying
1 + -1a = 0

Solving
1 + -1a = 0

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

Add '-1' to each side of the equation.
1 + -1 + -1a = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1a = 0 + -1
-1a = 0 + -1

Combine like terms: 0 + -1 = -1
-1a = -1

Divide each side by '-1'.
a = 1

Simplifying
a = 1
Solution
a = {0, 1}