X2 + 4X - 5 = 0
what two factor of - 5 add up to 4?
(X - 1)(X + 5)
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( so, X = 1 and X = - 5 )
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You don't factor an equation. You factor an expression.So we'll forget about the "equals 0" for a second, while we factor "x2 plus 5x plus 6".x2 + 5x + 6 = (x + 3) (x + 2).Now, if you want this expression to be equal to zero, that can only happen when 'x' is -2 or -3.
6x3 - x2 + 17 = 2x2 + 47 6x3 - x2 - 2x2 = 47 - 17 x2(6x - 1 - 2) = 30 this is the simplest factorisation.
5
If there is a remainder then it's not a factor otherwise yes
x + 4