Asked by Ashlee
how do i complete 2X squared minus X minus twenty one = 0?
Answers
Answered by
drwls
Equations are easier to work out if you write them as equations, not with words.
2x^2 -x -21 = 0
This can be written as two factors:
(2x -7)(x +3) = 0
x = 7/2 or -3 are the answers
2x^2 -x -21 = 0
This can be written as two factors:
(2x -7)(x +3) = 0
x = 7/2 or -3 are the answers
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