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• Identical expressions

• (x*(x + one) - four *x + one)*exp(-x) = zero
• (x multiply by (x plus 1) minus 4 multiply by x plus 1) multiply by exponent of ( minus x) equally 0
• (x multiply by (x plus one) minus four multiply by x plus one) multiply by exponent of ( minus x) equally zero
• (x(x + 1) - 4x + 1)exp(-x) = 0
• xx + 1 - 4x + 1exp-x = 0

• Similar expressions

• (x*(x - 1) - 4*x + 1)*exp(-x) = 0
• (x*(x + 1) + 4*x + 1)*exp(-x) = 0
• (x*(x + 1) - 4*x - 1)*exp(-x) = 0
• (x*(x + 1) - 4*x + 1)*exp(x) = 0