I posted this q yesterday but got no answer.
Can you move all of the radicals in the quadratic formula to the denominator? Please show your steps so I can understand.
+128460 It's possible.....
Working with one of the solutions, we have
[ -b + sqrt ( b^2 - 4ac) ] / (2a)
Multiply the numerator and the denominator by -b - sqrt[b^2 - 4ac]....this gives us
[ -b + sqrt ( b^2 - 4ac) ] [ - b - sqrt (b^2 - 4ac) ] / [ (2a) (-b - sqrt(b^2 - 4ac) ) ] =
[ b^2 - (b^2 - 4ac) ] / [ (2a) (-b - sqrt(b^2 - 4ac) ) ] =
[ 4ac] / [ (2a) (-b - sqrt(b^2 - 4ac) ) ] =
- [ 2c } / [ b + sqrt(b^2 - 4ac) ]
We could do a similar thing with the other solution, [ -b - sqrt ( b^2 - 4ac) ] / (2a)
