SOLUTION: PROBLEM: SOLVE THE EQUATION BY USING THE QUADRATIC FORMULA. -x+4x+32=0 HERE I KNOW THE QUADRATIC FORMULA AND HOW TO SET IT UP, BUT THE SOLVING PART IS VERY DIFFICULT FOR ME...

Algebra ->  Matrices-and-determiminant -> SOLUTION: PROBLEM: SOLVE THE EQUATION BY USING THE QUADRATIC FORMULA. -x+4x+32=0 HERE I KNOW THE QUADRATIC FORMULA AND HOW TO SET IT UP, BUT THE SOLVING PART IS VERY DIFFICULT FOR ME...       Log On


   

Question 138830: PROBLEM:
SOLVE THE EQUATION BY USING THE QUADRATIC FORMULA.
-x+4x+32=0
HERE I KNOW THE QUADRATIC FORMULA AND HOW TO SET IT UP, BUT THE SOLVING PART IS VERY DIFFICULT FOR ME...
PLEASE HELP!!
THANKS,
lj23kfuller@yahoo.com
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
Given: -x%2B4x%2B32=0
In this equation, a = -1, b = 4 and c = 32
x+=+%28-4+%2B-+sqrt%28+4%5E2-4%2A%28-1%29%2A32+%29%29%2F%282%2A%28-1%29%29+
x+=+%28-4+%2B-+sqrt%28+16%2B128+%29%29%2F%28-2%29+

x+=+%28-4+%2B-+sqrt%28144%29%29%2F%28-2%29+

x+=+%28-4+%2B-+12%29%2F%28-2%29+
x = -16/-2 = 8
x = 8/-2 = -4