Additional Mathematics 0606 / Simultaneous equations and quadratics / 3.153.15: Quadratic curve completely above the xxx-axis0606/23/O/N/23 — Question 2 · 4 marksMark as done · Save for later · Show all solutionsFind the values of kkk for which the curve y=x2+kx+4k−15y = x^{2} + kx + 4k - 15y=x2+kx+4k−15 is completely above the xxx-axis.[4]▸ Answer▸ Official mark scheme← 3.14: Simultaneous equations with xxx and lny\ln ylny3.16: Logarithmic simultaneous equations and index equation →
