# Trigonometry Examples

Find the X and Y Intercepts f(x)=2x^2+3x-4
To find the x-intercept, substitute in for and solve for .
Solve the equation.
Rewrite the equation as .
Use the quadratic formula to find the solutions.
Substitute the values , , and into the quadratic formula and solve for .
Simplify.
Simplify the numerator.
Raise to the power of .
Multiply by .
Multiply by .
Multiply by .
Factor out of .
Multiply by .
Multiply by .
Simplify the expression to solve for the portion of the .
Simplify the numerator.
Raise to the power of .
Multiply by .
Multiply by .
Multiply by .
Factor out of .
Multiply by .
Multiply by .
Change the to .
Rewrite as .
Factor out of .
Factor out of .
Move the negative in front of the fraction.
Simplify the expression to solve for the portion of the .
Simplify the numerator.
Raise to the power of .
Multiply by .
Multiply by .
Multiply by .
Factor out of .
Multiply by .
Multiply by .
Change the to .
Rewrite as .
Factor out of .
Factor out of .
Move the negative in front of the fraction.
The final answer is the combination of both solutions.
To find the y-intercept, substitute in for and solve for .
Simplify .
Simplify each term.
Raising to any positive power yields .
Multiply by .
Multiply by .