1.

Find the value of a,b,c,d if ( begin{bmatrix}a+b&c a-b&2c+d end{bmatrix} )= ( begin{bmatrix}3&2 1&6 end{bmatrix} ).

A. 3, 2, 1, 4
B. 3, 2, 1, 6
C. 2, 2, 2, 2
D. 2, 1, 2, 2
Answer» E.


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