Posted by **Riana** on Monday, January 28, 2013 at 6:03pm.

how to find the x intercept of d(x)=9x^2-4x+7

- math help! -
**Steve**, Monday, January 28, 2013 at 6:10pm
c'mon. It's just finding roots of a quadratic.

Since the discriminant is 16-4*9*7 < 0, there is no x-intercept

- math help! -
**Riana**, Monday, January 28, 2013 at 6:16pm
yeah i know but how will you know when to use this discriminant formula ?

## Answer this Question

## Related Questions

- Algebra: Check please!!! - 1. Find the x-intercept and the y-intercept of 8x - ...
- Algebra: x and y intercept, someone check please - 1. Find the x-intercept and ...
- Math please check my answer? - 1)6x+11y=30 A) x-intercept= (-24,0);y intercept...
- MAth!PLease Help! - 5. Find the x and y intercepts of each linear equation. Be ...
- math - find the slope intercept form for the line satisfying the following ...
- math - find a function y=ax^2+bx+c whose graph has an x-intercept of 1, a y-...
- Math - Find the x-intercept and the y-intercept of the linear equation 3x + 4y...
- math - how do i find the equation for the lines: 1. y-intercept of -2.1, x-...
- Algebra - The table below represents the function f(x). (-6, 12),(-5,-8),(-4,-4...
- Math: Linear Equations - What is "3x=9" in y=mx+b form, and what is its slope, y...

More Related Questions