Posted by Hokoslavia on Sunday, March 9, 2008 at 1:17pm.
use the quadratic formula to solve the equation
4x^27x2=0

algebra  drwls, Sunday, March 9, 2008 at 1:54pm
Your equation is already in the form ax^2 + bx + c = 0
In your case,
a = 4, b = 7 and c = 2.
The quadratic formula for the solution values of x, which you should memorize or learn to derive, is
x = [b +/ sqrt (b^24ac)]/2a
It would good practice for you to do the final alculation yourself
b^24ac = 81 in this case, and has a square root that is an integer, making the answer rather easy to write down.

algebra  Damon, Sunday, March 9, 2008 at 1:54pm
x = b/2a +/ (1/2a)sqrt(b^2  4 a c)
a = 4
b = 7
c = 2
x = 7/8 +/ (1/8) sqrt ( 49 + 32)
x = 7/8 +/ (1/8) sqrt (81)
lucky (9*9)=81
so
x = 7/8 +/ 9/8
x = 16/8 or 2/8 wow, nice polite numbers
so
x = 2 or  1/4
Answer This Question
Related Questions
 Math  Use the quadratic formula to solve each of the following quadratic ...
 algebra II  I'm quite clueless as to how to solve this. I know the quadratic ...
 math  (4.35E2  x)(7.56E2 x ) ============================ (0.324 + 2x)2 ...
 Algebra  Solve the equation. Use factoring or the quadratic formula, whichever ...
 Algebra  Use the Quadratic formula to solve the equation 4x^23x+2=0
 algebra  Use the quadratic formula to solve the equation. x^27x6=0
 algebra 1  Use the Quadratic Formula to solve the equation: 5x^2  6x  8=0 ....
 algebra 1  Use the Quadratic Formula to solve the equation: 5x^2 + 9x  2=0 2...
 algebra  use the quadratic formula to solve the equation 2x^23x=6
 algebra  Use the quadratic formula to solve the equation x^25x=10
More Related Questions