Quadraitic equations
posted by becca .
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
Respond to this Question
Similar Questions

Calculus  Seperable Equations
Solve the separable differential equation (dy/dx)=y(1+x) for y and find the exact value for y(.3). dy/dx = y(1+x) dy/y = (1+x)dx Integral (dy/y) = Integral (1+x)dx ln (y) = x + (1/2)x^2 + C y = e^(x + (1/2)x^2 + C) y(0.3) = e^(0.345 … 
algebra
1)What is the 4x^2=y^2+8y+32 answer= either hyperbola or parabola 2)The graph of which equation is a circle? 
Algebra 2
Can someone check my answers. Write the following equations in standard form. 1) x^2  2x + y^2 + 4y = 11 answer: (x1)^2 + (y+2)^2 = 16 2) 4x^2 + 24x  y + 34 = 0 answer: y = 4(x3)^2 + 2 3) The graph of which equation is a circle? 
differential equations
the directions are to determine whether or not the equation is exact if so then solve it. the question is (xy^3+ysinx)dx = (3xy^2+2ycosx)dy i solve and i got that it is exact because My is 3y^2+2ysinx and Nx is 3y^2+2ysinx since … 
Basic Math
I forgot how to solve for two variables... Please check if I solved both problems properly! Thank you. Equations: (solve for t and z) 12t + 4z = 80 2t + 4z = 20 My answer: t = 2, z = 14 The steps: (simplified it) z = 20  3t, z = 5 … 
Algebra
Solve the system of equations by an algebraic method. Leave answer in exact form. 4x²  7y² = 21 x² + 2y² = 99 
quadratic equations
can you solve the equation using the quadratic formula x2 + 3x = 7? 
ALGEBRA
Solve the equations by finding the exact solution. ln\(x\)  ln\(9\) = 3 
math
solve the equations by finding the exact solution 3=x3 
math
4 In e= In (ã(3))/(x)4 In e Solve the equations by finding the exact solution.