SOLUTION: Solve {{{2x^2 + 4x

SOLUTION: Solve {{{2x^2 + 4x - 5 =0}}}

Question 947342: Solve

Answer by macston(5194) (Show Source): You can put this solution on YOUR website!

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=56 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0.870828693386971, -2.87082869338697. Here's your graph:

RELATED QUESTIONS
Factor and solve:... (answered by richwmiller)

Solve {{{ -2x^2+4x-1=0 }}} (answered by josgarithmetic)

2x^2+4x-3=0.... (answered by Alan3354)

Solve by factoring 4x^2+8x-5=0 4x�+8x-5 = 0 4x�+10x-2x-5 = 0 (4x�-2x)+(10x-5)... (answered by nerdybill)

Solve for x: 2x - (4x)(e^(-2x^2)) =... (answered by brysca)

Solve.... (answered by jim_thompson5910)

Solve each quadratic equation. 1. x^2+3x=-5 2. x^2-36=0 3. 2x^2-4x+10=0 (answered by edjones)

Please solve... (answered by ewatrrr)

2x^2+4x=0 (answered by nerdybill)