Show that x = — 3 is a solution of 2x2 + 5x –3 = 0.

Put x = –3 in the equation.2(–3)2 + 5(–3) –3 = 018 – 15 –318 – 18= 0Therefore, x = –3 is the solution of the equation.

Q7 of 168 Page 7

Show that x = — 3 is a solution of 2x² + 5x –3 = 0.

Put x = –3 in the equation.

2(–3)² + 5(–3) –3 = 0

18 – 15 –3

18 – 18

= 0

Therefore, x = –3 is the solution of the equation.

Determine whether (i) x= √2, (ii) x = –2√2 are the solutions of the equation x² + √2 x – 4 = 0 or not.

Show that x = — 3 is a solution of x² + 6x + 9 = 0.

Show that x = — 2 is a solution of 3x² + 13x + 14 = 0.

For what value of k, is the solution of the equation

kx² – x – 2 = 0.