Posted by **becca** on Tuesday, January 17, 2012 at 11:03pm.

solve with an exact answer.

x^2 + 2x - 8

- Quadraitic equations -
**drwls**, Tuesday, January 17, 2012 at 11:29pm
Start by factoring

(x+4)(x-2) = 0

The equation is true if either factor is zero.

x = +__ or -___

- Quadraitic equations -
**becca**, Tuesday, January 17, 2012 at 11:31pm
Can you show me the steps please???? to solve this equation.

- Quadratic equations -
**drwls**, Tuesday, January 17, 2012 at 11:44pm
I just did. The final answer is 2 or -4. Do you understand how to factor equations? That might be a topic worth reviewing.

If you wan to do it the hard way, you can also use the quadratic equation

x = [-b +/-sqrt(b^2-4ac)]/(2a)

Then substitute a = 1, b = 2 and c = -8

sqrt(b^2 -4ac) = sqrt36 = 6

x = (1/2)*[-2 +/-6]

= (1/2)(4 or -8)

= 2 or -4

- Quadraitic equations -
**becca**, Tuesday, January 17, 2012 at 11:51pm
Thank you so much and I definetly need to review how to factor equations<<<good night and sweet dreams>>>thank you for helping me

## Answer This Question

## Related Questions

- algebra - 1)What is the 4x^2=y^2+8y+32 answer= either hyperbola or parabola 2)...
- differential equations - the directions are to determine whether or not the ...
- Algebra - Solve the system of equations by an algebraic method. Leave answer in ...
- Calculus - Seperable Equations - Solve the separable differential equation (dy/...
- Basic Math - I forgot how to solve for two variables... Please check if I solved...
- quadratic equations - can you solve the equation using the quadratic formula x2...
- Algebra 2 - Can someone check my answers. Write the following equations in ...
- math - 4 In e= In ((3))/(x)-4 In e Solve the equations by finding the exact ...
- math - solve the equations by finding the exact solution 3=x-3
- ALGEBRA - Solve the equations by finding the exact solution. ln\(x\) - ln\(9...

More Related Questions