Question

One solution of the equation 4x2 - 9x + 5 = 0 is five over four. What is the other solution?

Answer 1

Simplifying
4x2 + 9x + 5 = 0

Reorder the terms:
5 + 9x + 4x2 = 0

Solving
5 + 9x + 4x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(5 + 4x)(1 + x) = 0

Subproblem 1
Set the factor '(5 + 4x)' equal to zero and attempt to solve:

Simplifying
5 + 4x = 0

Solving
5 + 4x = 0

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

Add '-5' to each side of the equation.
5 + -5 + 4x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 4x = 0 + -5
4x = 0 + -5

Combine like terms: 0 + -5 = -5
4x = -5

Divide each side by '4'.
x = -1.25

Simplifying
x = -1.25
Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve:

Simplifying
1 + x = 0

Solving
1 + x = 0

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

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

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

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

Simplifying
x = -1
Solution
x = {-1.25, -1}

Answer 2

So its -1
or x = {-1.25, -1}

Answer 3

x can be -1 or 1.25

Answer 4

ok thanx

Answer 5

Welcome :)