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4x2+4x-8 4(x2+x-2) and (4x+8)(x-1)
4x - 3 = 5 4x = 5 + 3 4x = 8 x = 8/4 x = 2
4x - 7 = 1 Therefore, 4x = 8 x = 8/4 x = 2
8
To justify something in math is to prove it. Example: Justify 4x = 8 when x = 2. When x = 2, 4(2) = 8. Done. By doing this I justified that 4x = 8 when x = 2.