42p^2-85p+42=0

Solution for 42p^2-85p+42=0 equation:

Simplifying
42p2 + -85p + 42 = 0

Reorder the terms:
42 + -85p + 42p2 = 0

Solving
42 + -85p + 42p2 = 0

Solving for variable 'p'.

Factor a trinomial.
(6 + -7p)(7 + -6p) = 0

Subproblem 1
Set the factor '(6 + -7p)' equal to zero and attempt to solve:

Simplifying
6 + -7p = 0

Solving
6 + -7p = 0

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

Add '-6' to each side of the equation.
6 + -6 + -7p = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -7p = 0 + -6
-7p = 0 + -6

Combine like terms: 0 + -6 = -6
-7p = -6

Divide each side by '-7'.
p = 0.8571428571

Simplifying
p = 0.8571428571
Subproblem 2
Set the factor '(7 + -6p)' equal to zero and attempt to solve:

Simplifying
7 + -6p = 0

Solving
7 + -6p = 0

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

Add '-7' to each side of the equation.
7 + -7 + -6p = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -6p = 0 + -7
-6p = 0 + -7

Combine like terms: 0 + -7 = -7
-6p = -7

Divide each side by '-6'.
p = 1.166666667

Simplifying
p = 1.166666667
Solution
p = {0.8571428571, 1.166666667}