SOLUTION: how to solve √sē-20s+100? I know the answer is |s-10| but I need the steps in solving this. Somehow the -20s dissapears. Where does it go and why?
Algebra.Com
Question 658164: how to solve √sē-20s+100? I know the answer is |s-10| but I need the steps in solving this. Somehow the -20s dissapears. Where does it go and why?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
s^2 - 20s + 100
s^2 - 10s - 10s + 100
s(s-10) - 10(s-10)
(s-10)(s-10)
(s-10)^2
So s^2 - 20s + 100 = (s-10)^2
This means
sqrt( s^2 - 20s + 100 ) = sqrt( (s-10)^2 )
sqrt( s^2 - 20s + 100 ) = |s-10|
RELATED QUESTIONS
Please help me with this factoring question 20s^2-8s=4s( ) I know that 4s is a factor of (answered by MathTherapy)
I am trying to convert this problem from decimals to whole numbers and solve it. But... (answered by AnlytcPhil)
Tutor If you can please help me in finding the equivalent to this expression...thank you... (answered by jim_thompson5910)
Multiply.
(s+(1)/(4))(s+(1)/(5))
Is this the correct answer?: s^2+9/20s+1
Anyone (answered by jorel1380)
I need help solving this Quadratic equation: x+11√ ̅x +10.
I know how... (answered by nerdybill)
I am in tears over how to solve these. Please help! I need someone to explain this to me... (answered by jim_thompson5910)
Translate to an equation:
p $25 potted plants and s $20 shrubs total $300
Graph the... (answered by scott8148)
Please help me solve this problem. I need to know the steps to solving it, not just the... (answered by stanbon)
Daniel wants to order shirts. Shirts cost $20 and shipping on all orders is $10.99.... (answered by josgarithmetic)