Solve this equation please .. 2x(to the power of two)-3x-4=0?

Question

2x(squared)-3x-4=0
by the way thanks to the awesome people that helped me in my previous questions!!!!!!!!!luv yall ... please help me in this question

Answer 1

The quadratic cannot be factored in terms of integers, so the final answer has to be the same as the original expression.

Go to www.quickmath.com and click on the Quadratics link along the left. Plug in your formula and see what I'm talking about. BTW you will LOVE the Quickmath site. They even walk you through the solution.

2x^2-3x-4

3 +- sqrt of 9 - (4*-8) =

3 +- sqrt of (9+32) / 4=

3 +- sqrt of (41) / 4

These roots are irrational, the quadratic cannot be factored in terms of integers.

Answer 2

2x^2 - 3x - 4 = 0
Using formula for roots of a quadratic equation
x = 3 +/- sqrt(9+32)/2

x = 3/2 + sqrt(41)/2 or x = 3/2 - sqrt(41)/2

Answer x = (-4.9031,7.9031)

Answer 3

Quadratic Equation

x = - b ± √b² - 4ac / 2a

x = - (- 3) ± √(-3)² - 4(2)(- 4) / 2(2)

x = 3 ± √9 - (- 32) / 4

x = 3 ± √9 + 32 / 4

x = 3 ± √41 / 4

x = 3 ± 6.403124237 / 4

- - - - - - - - - -

Solving for +

x = 3 + 6.403124237 / 4

x = 9.403124237 / 4

x = 2.350781059

- - - - - - -

Solving for -

x = 3 - 6403124237 / 4

x = -3.403124237 / 4

x = - 0.850781059

- - - - - - -s-

Answer 4

2x^2 - 3x - 4 = 0
a b c
use the formula for quadratic equations ( x=-b +or- root of b^2-4ac/2a)

x= --3+or- [root of (-3)^2-4(2)(-4)]/2(2)
x=3+or- [root of 9+32]/4
x=3+or- [root of 41]/4
or you can simplify it to decimal form
x= (-0.64921894... , 2.350781059...)
round to nearest 1000th
x= about (-0.649, 2.351)

Answer x = (-4.9031,7.9031)

Hope that helps!

Answer 5

Use the formular for solving quadratic equation.

x = (3+sq root (9+32))/4 or
x = (3-sq root (9+32))/4

Pse compute the answer yourself.

Answer 6

You have to use the quadratic formula:
x=-b±√b^2-4ac/2a
a=2,b=-3,c=-4
x=(3±√(-3)^2-4(2*-4))/2(2)
x=(3±√9+32)/4
x=(3±√41)/4
x=-.85 or 2.35

Answer 7

2x² - 3x - 4 = 0
x = [3 ± √(9 + 32)] / 4
x = [ 3 ± √(41) ] / 4
x = 2.35, - 0.85

Answer 8

I believe that it is no solution... i can't get it to factor

Answer 9

this is a wrong equation.