round 0.00873 to 2 significant figures
2 $x^{4}$ - 9 $x^{3}$ + 15 $x^{2}$ +5x -21 = 0
round 0.725 to 2 significant figures
factorize x^{ 2 } - 18x+81
round 0.026 to 1 significant figure
Kilolitres of water used Number of users
10 -< 13 5
13 -< 16 9
16 -< 19 14
19 -< 22 15
22 -< 25 7
5.1 Calculate the mean...
round 0.062 to 1 significant figure
lambda= 2 $\sqrt{(433/275)}$
(72/25)/(548/125)
factorize x^{ 2 } + 18x+81
