SOLUTION: how do you solve the equation X^2 +2x-3

Question 172648: how do you solve the equation X^2 +2x-3
Found 2 solutions by jim_thompson5910, Alan3354:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
First of all, is NOT an equation (as it has no equal sign). Are you trying to solve

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

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

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
how do you solve the equation X^2 +2x-3
-----------
There are several methods. 3, anyway. I'll assume it's equal to zero, tho it doesn't say that. An "equation" gets its name from the "equal" sign, something is equal to something else. x^2 +2x-3 is not an equation, it's an expression, specifically a trinomial.
------------------
Anyway, assuming it's equal to zero:
One method is to factor it:
x^2 +2x-3 = 0
(x+3)*(x-1) = 0
If the product is zero, one or both have to be zero. Right?
If x+3 = 0, then x=-3
If x-1 = 0, then x=+1
x can't be both, so it's either -3, or it's +1.
Those are the possible answers.
x = 1
x = -3

RELATED QUESTIONS
How do you solve this equation? 4^(log2(3+x)) = 2x^2+8x+10 [the 2 is a base] (answered by ewatrrr)
how do you solve and check the rational equation of {{{ 1/2x + (x-2)/2x = (x-2)/(2x+1)... (answered by lwsshak3)
How do you solve the equation 3/2x=6 (answered by chibisan,checkley77)
how do you solve the equation... (answered by josgarithmetic)
How do you solve this equation for y: 2x+3=8 2x+3-3=8-3 2x=5 2x/2=5/2 x=5/2 or 2.5 (answered by RAY100)
How do you solve this equation? Given: 3(x+4)-2(y+2)=3 Prove: y= 3/2x +... (answered by solver91311)
How do you solve:... (answered by checkley71)
How do you solve equation 2x^1/2 -3=0? (the one half is the exponent) (answered by stanbon)
how do you solve and graph the equation x+y=2... (answered by edjones)