Q1 of 227 Page 110

Determine the nature of the roots of the equation.

9x2 + 12x + 4 = 0

9x2 – 12x + 4 = 0



⇒ a = 9, b = –12 and c = 4


= (–12)2– 4(9)(4)


144 – 144


= 0


∴ b2 – 4ac > 0. hence, roots are real and equal.


More from this chapter

All 227 →
1

Determine the nature of the roots of the equation.

x2 – 8x + 12 = 0

 1

Determine the nature of the roots of the equation.

2x2 – 3x + 4 = 0

 1

Determine the nature of the roots of the equation.

3x2 –2√6x + 2 = 0

 1

Determine the nature of the roots of the equation.