2+5 = 7
7 + 125 = 132.
-5 + 125 = 120
146
125 + 125 + 125 + 125 + 125 + 125 =125 * 6 =(100 * 6) + (20 * 6) + (5 * 6) =600 + 120 + 30 =600 + 100 + 20 + 30 =700 + 50 =750
8/5 + 9/10 = 125/50 or 5/2 or 21/2
20p2 + 100p + 125 = 5(4p2 + 20p + 25) = 5(4p2 + 10p + 10p + 25) = 5(2p(2p + 5) + 5(2p + 5)) = 5(2p + 5)(2p + 5) = 5(2p + 5)2
40 and 125 40= 2*5*2 125=5*5*5 GCF = 5
13/125/12 + 2/3= (5 + 8)/12= 13/12
(2x + 5)(4x^2 - 10x + 25)
125 + 25 - 90 + 35 - 20 = 5
x^(3) + 125 => x^(3) + 5^(3) This factors to (x + 5)(x^(2) - 5x + 5^(2) ) or (x + 5)(x^(2) - 5x + 25) NB The clue is to spot that the constant (125) is a cubic numbers ( 5^(3)). Similarly with other 'cubic factorings'.
125
13