Which expression is equivalent to 10a - 25 + 5b
choose 3 answers.

A. (2a−5+b)5
B. −2(−5a−25+5b)
C. 10×(a−2.5+0.5b)
D. (−2a+5−b)⋅(−5)
E. −10⋅(−a−2.5−0.5b)

answer A

Step-by-step explanation:

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  

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!