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Difficulty in quadratic equations..need help!!!?
For the life of me I cant figure out how to get this quadratic equation right
-22x + 21=8x^2
The ^2 stands for squared... thanks to anyone who can help!!
2 Answers
- HankmLv 71 decade agoFavorite Answer
8x^2 +22x -21 = 0
x^2 +2.75x-2.625
ax^2 +bx +c = 0 is std form
......................b+/-sqrt(b^2 -4ac)
.....................-------------------------
............................2a
22+/-sqrt(484+672)
------------------------------- = 1.375 +/- 2.125 = 3.5, -0.75
..........16
8(x+3.5)(x-0.75)
- Anonymous1 decade ago
(2x-7)(4x+3)=0 ----> x = 7/2 or -3/4
