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a+bccbc+abaab+cthis is determinate problem i need easy solution in some operations

shubh mishra , 12 Years ago

Grade upto college level

1 Answers

SHAIK AASIF AHAMED

Last Activity: 10 Years ago

Hello student,
Please find the answer to your question below
$\begin{vmatrix} a+b & c &c \\ b& c+a & b\\ a& a & b+c \end{vmatrix}$
r1=r1-(r2+r3)
$\begin{vmatrix} 0 & -2a &-2b \\ b& c+a & b\\ a& a & b+c \end{vmatrix}$
now by expanding the matrix we get
=2a(b²+bc-ab)-2b(ab-ac-a²)
=4abc

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