Additional Mathematics 0606 / Equations, inequalities and graphs / 3.513.51: Completing the square and range0606/21/M/J/24 — Question 2 · 4 marksMark as done · Save for later · Show all solutions(a)Write 2x2+3x−42x^{2} + 3x - 42x2+3x−4 in the form a(x+b)2+ca\bigl(x + b\bigr)^{2} + ca(x+b)2+c, where aaa, bbb and ccc are constants.[3]▸ Answer(b)Hence write down the range of f(x)=2x2+3x−4f(x) = 2x^{2} + 3x - 4f(x)=2x2+3x−4, where x∈Rx \in \mathbb{R}x∈R.[1]▸ Answer▸ Official mark scheme← 3.50: Sketch y=∣4x−6∣y = |4x - 6|y=∣4x−6∣ and solve an equation3.52: Show an equation has no real solutions →
