9. Complete the comparison: 26 < ?
А. 26
В. 13
С. 25
D. 54

54

Step-by-step explanation:

26<? Means a number greater that 26. So it has to be 54 as it is the only number that is greater than 26.

54

Step-by-step explanation:

it is asking what is bigger than 26 by this sign < if it was this sign > it would mean what is smaller than 26  this sign ≥ would ask what is equal to or smaller than 26 and lastly this sign ≤ would ask what is equal to or bigger than 26

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  

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square