What is the distance from -50 to-0 on a number line

50 units

Step-by-step explanation:

Think of it as taking steps.  Each unit is a step.  It will take you 50 steps to get from -50 to 0, so the distance is 50

Mathematically, end point minus starting point

0 - (-50) =

0+50 = 50

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1