8 it is the same as 4+4
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8
17 2x4=8+(3x3)=17 3x3=9 9+8=17
You can work this out with long division, by checking to see if (x2 - 1) is a factor of (2x4 + 4x3 - x2 + 4x - 3). It is. Unfortunately, the WikiAnswers system is somewhat limited in depicting things such as long division, so we won't be able to represent it here. In short though, (2x4 + 4x3 - x2 + 4x - 3) / (x2 + 1) is equal to 2x2 + 4x - 3. which means that: (x2 + 1) / (2x4 + 4x3 - x2 + 4x - 3) = (x2 + 1) / (x2 + 1)(2x2 + 4x - 3) = 1 / (2x2 + 4x - 3)
238 = 2x4 = 2x2x2 = 23.
2 x 1 are 1 2x2 are 4 2x3 are 6 2x4 are 8 here, ja refers to are.