Sample Activity

x=4·5 gives 56·25

too big

x=5 gives 25

too small

The solution is between 4 and 5 x=4·3 gives 51·17

too big

The solution is 4·2 to 1 decimal place

x=4 gives 44

too small

x=4·8 gives 64·32

too big

x=4·25 gives 49·9375

too big

The solution is 4·3 to 1 decimal place x=5 gives 70

too big

x=4·2 gives 48·72 The solution is between 4·2 and 4·3

Place the cells in a correct logical order to solve the following equation using a trial and improvement method:

3x²-x = 49

EXIT