SOLUTION: Solve (no need for sentence/units):         3.4x^2 – 8.7x – 17.1 = 0

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Solve (no need for sentence/units):         3.4x^2 – 8.7x – 17.1 = 0      Log On


   

Question 289794: Solve (no need for sentence/units):
        3.4x^2 – 8.7x – 17.1 = 0
Answer by j1mmy94(14) About Me  (Show Source):
You can put this solution on YOUR website!
The original quadratic equation is +3.4%2Ax%5E2-8.7%2Ax-17.1=0+
Multiply 10 on both sides, you should get +34%2Ax%5E2-87%2Ax-171=0+
Either you factor or use the quadratic formula is up to you. I always trust the quadratic equation even though it is longer.
Quadratic formula: x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
a= 34
b= -87
c= -171
Plug in the values for the variables in the quadratic formula!
x+=+%28-%28-87%29+%2B-+sqrt%28+%28-87%29%5E2-4%2A34%2A-171+%29%29%2F%282%2A34%29+
Simplify the equation:
x+=+%2887+%2B-+sqrt%28+7569%2B23256+%29%29%2F%2868%29+
x+=+%2887+%2B-+sqrt%28+30825+%29%29%2F%2868%29+