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It is 27x2 + 108x - 6.
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(5x - 4)(2x + 7)
9x2 + 27x - 36 = 9(x2 + 3x - 4) = 9(x + 4)(x - 1)
The answe is 27x^4 + 6x^3 - 61x^2 - 68x - 42
27x-3=105 27x =105+3 27x = 108 27x/27=108/27 x= 4
8-6+4=6. But 8-(6+4)=-2