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x²-4x+3x-2 = 28
Combine like terms -4x and +3x as -1x
x²-1x-2 = 28
Add -28 to both sides to get 0 on the right:
x²-1x-30 = 0
Factor the left side:
(x-6)(x+5) = 0
Use the zero-factor property:
x - 6 = 0; x + 5 = 0
x = 6; x = -5
Two solutions: 6 and -5
Some teachers like for you to write the solution set
by the roster method in order smallest to largest.:
{-5, 6}
Edwin
