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2x2 - x = 21
Subtract 21 from each side . . 2x2 - x - 21 = 0
Factor the left side . . . . . . . . (2x - 7) ( x + 3) = 0
If (2x - 7 = 0), then . . . . . x = 3.5
If (x + 3 = 0), then . . . . . x = - 3
Wiki User
∙ 13y agoThis answer is:
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Wiki User
∙ 8y ago(2x - 7)(x + 3)
x = 3.5, -3
This answer is:
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