Write the hindu-arabic numeral in expanded form.
13) 15
a) (1x 10^1)+ (5 10^2)
c) (1 10^6) + (5 * 10^1)
b) (1 x 10^2) + (5 x 10^1)
d) (1 x 10^1) + (5 x 10^0)

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  

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150

21

step-by-step explanation:

d

step-by-step explanation:

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