what is the value of x in the following equation x=-2 x=3 x=7 x=-7
Answers
Answer:
When you factor a quadratic equation, you end up with two factors. For example...
x2 + 5x + 6 = 0
(x + 3)(x + 2) = 0
Now, this part gets confusing, but if you have two factors that equal 0 when multiplied, one or both factors has to equal 0.
x + 3 = 0
x = -3
x + 2 = 0
x = -2
So, you have two solutions. Plug in either -2 or -3 in for x and your equation will be true. Both solutions came from the factors of your
When you factor a quadratic equation, you end up with two factors. For example...
x2 + 5x + 6 = 0
(x + 3)(x + 2) = 0
Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
x-(-3)=0
Step by step solution :
STEP
1
:
Solving a Single Variable Equation:
1.1 Solve : x+3 = 0
Subtract 3 from both sides of the equation :
x = -3