8x + 9x = x(8 + 9) = x(17) = 17x
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Integral : 9x + 8 = 9(x squared)/2 + 8x Differential : 9x +8 = 9
8x - 9 = 9x - 5 8x - 8x - 9 = 9x - 8x - 5 -9 = x - 5 -9 + 5 = x - 5 + 5 -4 = x
18 + 8x + x = = 18 + 9x = 9(2 + x) which is the factored form of the expression.
x - x2 - 9x + 14 = 0 ; whence, x2 + 8x = 14 , x2 + 8x + 16 = 30 , and x + 4 = ±√30 . Therefore, x = ±√30 - 4 .
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