Quadraitic equations
posted by becca on .
solve with an exact answer.
x^2 + 2x  8

Start by factoring
(x+4)(x2) = 0
The equation is true if either factor is zero.
x = +__ or ___ 
Can you show me the steps please???? to solve this equation.

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^24ac)]/(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 
Thank you so much and I definetly need to review how to factor equations<<<good night and sweet dreams>>>thank you for helping me