SOLUTION: 62. (x � 10)(x � 2) = -20 thanks for all your help, i really am trying

Question 60394: 62. (x � 10)(x � 2) = -20 thanks for all your help, i really am trying
Answer by ptaylor(2198) (Show Source): You can put this solution on YOUR website!
Lets first get the equation into quadratic form (ax^2+bx+c=0) and we can then apply the quadratic formula x =(-b +- sqrt( b^2-4ac ))/2a to get the two solutions.
Expanding the left side of the equation (eg., multiplying (x-10)(x-2)), we get x^2-12x+20. We now have:
x^2-12x+20=-20, adding 20 to both sides, we have:
x^2-12x+40=0 It's now in quadratic form and we can apply the quadratic formula to get the answer
x=(12+-sqrt(144-160))/2 or
x=(12+-sqrt(-16))/2 ; which yields imaginary solutions:
x=6+2i and x=6-2i
Hope this helps-----ptaylor

RELATED QUESTIONS
2.)Why do we have to check the solutions when we solve radical equations? 4.)... (answered by edjones)

thanks for your help on the previous problem... I'm trying to apply the rules you showed (answered by longjonsilver)

Hello! I am trying to solve the following for homework. I am really struggling with... (answered by rfer)

x^2+3x-10 ___________ x^2+x-20 simplify the rational expression Thanks for... (answered by Mathtut)

x^3+5x^2+6x factor please. thanks alot for your help. i really appreciate... (answered by Nate)

I have a few I am totally stuck on. #1)2/x+3 - 2x+3/x-1 = 6x-5/x^2+2x-3 Okay... (answered by mananth)

Could someone please help me!! I really need help asap please!!!! Find the horizontal... (answered by stanbon)

Graph the equation y + 3 = 2 (x - 2) I am trying to help my 8th grader and... (answered by josgarithmetic,josmiceli)

Graph the inequality. x < �2 Someone please help me with this I have no idea how to do (answered by jim_thompson5910)