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Asked by nitishkrnehu09 | 14th Nov, 2017, 10:15: PM

Expert Answer:

begin mathsize 16px style open vertical bar table row 1 straight a cell straight a squared end cell row straight a cell straight a squared end cell 1 row cell straight a squared end cell 1 straight a end table close vertical bar equals negative 4
expand space you space will space get
straight a to the power of 6 minus 2 straight a cubed plus 1 equals 4
table row Sub cell straight a cubed equals straight t end cell end table
straight t squared minus 2 straight t plus 1 equals 4
open parentheses straight t minus 1 close parentheses squared equals 4
straight t equals negative 1 space or space straight t space equals 3
re space sub
straight a cubed equals negative 1 space or space straight a cubed equals space 3
we space will space take space straight a cubed equals negative 1 comma space since space cube space root space of space minus 1 space is space minus 1 space
while space cube space root space of space 3 space is space 1.44224957
so comma space straight a space equals negative 1
s u b space a n d space f i n d space t h e space v a l u e space o f space d e t e r m i n a n t

end style

Answered by Arun | 7th Dec, 2017, 10:10: AM