Find the roots of the quadratic equation .

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

Find the roots of the quadratic equation

8x^2 + 22x + 15 = 0

. (a)

x = \dfrac{5}{4},\; \dfrac{3}{2}

(b)

x = -\dfrac{9}{8},\; -\dfrac{13}{8}

(c)

x = -\dfrac{5}{4},\; -\dfrac{3}{2}

(d)

x = -\dfrac{3}{4},\; -\dfrac{5}{2}