CBSE Class 12 Mathematics 2026 Supplementary Paper 65/7/1 · Q121 Marksdefinite_integrals CBSE Class 12 Mathematics 2026 Supplementary Paper 65/7/1 · Question 12 (Integrals) If \(\int_0^1(9x^2-4x-2k)\,dx=0\), find k. (A) 1(B) 0(C) \(1/2\)(D) \(-1/2\)