SOLUTION: (7x2+x+1)-(3x2-4x-3)

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: (7x2+x+1)-(3x2-4x-3)      Log On


   

Question 99641: (7x2+x+1)-(3x2-4x-3)
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
7X^2+X+1
-3X^2+4X+3 NOW ADD
-------------------------------------------
4X^2+5X+4 IF YOU NEED TO SOLVE THIS EQUATION THEN USING THE QUADRATIC EQUATION:
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ WE GET:
X=(-5+-SQRT[5^2-4*4*4])/2*4
X=(-5+-SQRT[25-64])/8
X=(-5+-SQRT-39)/8
X=(-5+-6.25i)/8
X=5/8+6.25i/8
X=.625+.78i ANSWER.
X=(5-6.25i)/8
X=5/8-6.25i/8
X=.625-.78i ANSWER.