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• Identical expressions

• four *exp(two *x + one) = zero
• 4 multiply by exponent of (2 multiply by x plus 1) equally 0
• four multiply by exponent of (two multiply by x plus one) equally zero
• 4exp(2x + 1) = 0
• 4exp2x + 1 = 0

• Similar expressions

• 4*exp(2*x - 1) = 0