SOLUTION: Factor completely over the rational numbers: x^2-72

Algebra.Com
Question 71061: Factor completely over the rational numbers: x^2-72
Answer by checkley75(3666)   (Show Source): You can put this solution on YOUR website!
x^2-72 using the quadratic equation we get
x=(-b+-sqrt[b^2-4*a*c]/2a
x=(0+-sqrt[0-4*1*-72])/2
x=(+-sqrt288)/2
x=+-16.97/2
x=16.97/2
x=8.485 answer
x=-16.97/2
x=-8.485 answer

RELATED QUESTIONS

Factor completely over the set of REAL numbers:... (answered by drk)
Factor completely over the set of complex numbers... (answered by richwmiller)
For the polynomial given below completely factor it over the real numbers. x^3 + 9x^2 +... (answered by MathLover1)
4. List all possible (or potential) rational zeros for the polynomial below. Find all... (answered by lwsshak3)
Factor completely 6a^2 – 6a - 72 (answered by jim_thompson5910)
Factor Completely:... (answered by richwmiller)
Express the following as a product of linear factors: x^3+3x^2-10x-30. (Basically,... (answered by KMST)
Factor completely over the imaginary number:... (answered by checkley75)
how do you factor completely using rational numbers? 1/4 - u^2/81 Thank... (answered by stanbon)