(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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7x^2 + 3x - 4 = 0
Factor
( 7x - 4)(x + 1) = 0
7x - 4 = 0
7x = 4
x = 4/7
&
x + 1 = 0
x = -1
Not sure what your equation is... but here are the two interpretations that I believe you meant... This one... 7x2 + 3x = 0 x(7x+3) = 0 x = 0 and -3/7 Or this one... 7x/2 + 3x=0 7x+6x=0 13x=0 x= 0
3x + 2 = 0 3x = -2 x = -2/3
x = 0
x = y = 0 ?
-2