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7x^2 + 3x - 4 = 0

Factor

( 7x - 4)(x + 1) = 0

7x - 4 = 0

7x = 4

x = 4/7

&

x + 1 = 0

x = -1

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lenpollock

Lvl 16
βˆ™ 8mo ago
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Wiki User

βˆ™ 14y ago

(7x - 4)(x + 1 ) making x = either 4/7 or -1

Check: (7 x 16/49) + 12/7 = 16/7 + 12/7 = 4 ok

7 + (-3) = 4 ok...and there you have it.

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Q: 7x2 plus 3x - 4 equals 0?
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