SOLUTION: HELP!!!
Solve the equation algebraically by factoring or using quadratic formula;
x squared - 2x -3 = 0
very confused!!!!!
Algebra.Com
Question 153243: HELP!!!
Solve the equation algebraically by factoring or using quadratic formula;
x squared - 2x -3 = 0
very confused!!!!!
Found 3 solutions by stanbon, Earlsdon, jim_thompson5910:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Solve the equation algebraically by factoring or using quadratic formula;
x squared - 2x -3 = 0
---------------
x^2-2x-3 = 0
(x-3)(x+1) = 0
x = 3 or x=-1
==================
Cheers,
Stan H.
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve for x:
Factor the trinomial.
Apply the zero product rule.
or
or
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation.
Notice we have a quadratic equation in the form of where , , and
Let's use the quadratic formula to solve for x
Start with the quadratic formula
Plug in , , and
Negate to get .
Square to get .
Multiply to get
Rewrite as
Add to to get
Multiply and to get .
Take the square root of to get .
or Break up the expression.
or Combine like terms.
or Simplify.
So the answers are or
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