SOLUTION: What are the x intercepts of y + 12 = x2 + x?
Algebra.Com
Question 325777: What are the x intercepts of y + 12 = x2 + x?
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
To find the x-intercept, let y = 0 and solve for x.
y + 12 = x^2 + x
Let y = 0
0 + 12 = x^2 + x
12 = x^2 + x
Subtract 12 from both sides.
0 = x^2 + x - 12
We now factor the quadratic equation.
0 = (x - 3)(x + 4)
Set each factor to zero and solve for x.
x - 3 = 0
x = 3
x + 4 = 0
x = -4
The x-intercepts are x = 3 and x = -4.
Did you follow?
======================================
By the way, if you ever need to find the y-intercepts, let x = 0 and solve for y.
RELATED QUESTIONS
What are the x intercepts and y intercepts of... (answered by Fombitz)
Find the x-intercepts of y = x2 + x +... (answered by fractalier)
question 2)what are the x-intercepts of the graph 0f... (answered by Fombitz)
What are the x- and y- intercepts of the linear function... (answered by MathLover1)
What are the x and y intercepts of... (answered by oberobic)
What are the slope and y-intercepts of... (answered by Nate)
what are the intercepts of... (answered by stanbon)
What are the intercepts of y=(-3/4)x+6? (answered by vleith)
What are the x-intercepts of a parabola witha vertex (4,-1) and y intercept of (0,15)... (answered by josgarithmetic)