If the sum of quadratic coefficient and constant term in the quadratic equation AX2 + BX + C = 0 is equal to the coefficient of the first term, then one root of the equation must be () A. 0B. 1C. -1D. ±1

If the sum of quadratic coefficient and constant term in the quadratic equation AX2 + BX + C = 0 is equal to the coefficient of the first term, then one root of the equation must be () A. 0B. 1C. -1D. ±1

∵ in the equation AX2 + BX + C = 0, the sum of the quadratic coefficient and the constant term is equal to the coefficient of the first term, ∵ a + C = B, that is, A-B + C = 0, then one root of the equation must be - 1