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(A= left[ begin array rrr 2 & -1 & 1 3 & 1 & -4 5 & 2 & -3 end array right], B= left[ begin array lll p^ 2 & q r & 2 p q^ 2 & r p & 2 q r^ 2 & p q & 2 r end array right] ). | Suva Ai