Posted by Britt on .
69: 16x^2+8x3. I inserted this into the quadratic formula and got 8+/ the square root of (8^24(16)(3)/(2 times 16). This reduced to 8+/ the square root of (64+120)/32, which further reduced to 8+/the square root of 184/32. I reduced the top part to 8 +/ the square root of four and the square root of six which became 8 +/ 2 times the square root of six over 32. I divided 8 and 32 by 8, resulting in 1 +/ the square root of six/16. But my book said the answer is 1/4, 3/4. Where did I go wrong?
Thanks for your help!!!

Algebra 
Reiny,
I got
x = (8 ± √(64 + 192)/32
= (8 ± √256)/32
= (8 ± 16)/32
= 8/32 or 24/32
= 1/4 or 3/4
Can you find your error ?