Quadratic Equations (Cambridge (CIE) IGCSE International Maths: Extended): Exam Questions

Use the quadratic formula to solve $9x^2-12x-23=0$.
Give your answers correct to 2 decimal places.

$x=$ ............................ or $x=$ ............................

Solve the equation $3x^2-2x-10=0.$
Show all your working and give your answers correct to 2 decimal places.   

$x$ = ..................... or $x$ = ..................... 

Use the quadratic formula to solve the equation  $3x^2+7x-11=0.$
You must show all your working and give your answers correct to 2 decimal places.  

$x$ = .................... or  $x$ = ....................

Solve the equation  $3x^2-2x-2=0$.
Show all your working and give your answers correct to 2 decimal places.  

$x$ = ........................... or $x$ = ........................... 

Solve the equation $6m^2+25m+16=0$.
Show all your working and give your answers correct to 2 decimal places.

$m=$ ..................... or $m=$..................... 

Solve the equation $2x^2+7x-3=0$.

Show all your working and give your answers correct to 2 decimal places.

$x$ = ..................... or $x$ = .....................