144/9 = 16/1 = 16
17/5 = 3 2/5
306/10 = 30 6/10 = 30 3/5
101/101 = 1
1)326-284=42
2)42:21=2
3)96+23=119
4)119+2=121
X² + 12x + 11 = 0
D = 144 - 44 = 100 = 10²
x1 = ( - 12 + 10 ) : 2 = - 1
x2 = ( - 12 - 10 ) : 2 = - 11
5^2+5^2+5^2+5^2 = <span>100
</span>4^2+4^2+4^2+4^2 = 64