If A - begin bmatrix 28-3 - 90 -182 e n d b m a t r i x - text and - C - beginbmatrix -2 -8 - 6endbmatrix - find A - B - CA- begin bmatrix 4 -4 - 5lendbmatrix 484 - 5bmatrix -4 - 4 - 5lendbmatrix 4 - 4 -5lendbmatrix

The correct option is B [ 4 amp;4 amp;5 ] A+B=[ 2 amp; 3 amp;9 ] +[ 0 amp; 1 amp;2 ] =[ 2 amp; 4 amp;11 ] A+B C=[ 2 amp; 4 a ...

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Standard X

Mathematics

Addition of Matrices

If A = begin ...

Question

If $A = [\begin{matrix} 2 & - 3 & 9 \end{matrix}], B = [\begin{matrix} 0 & - 1 & 2 \end{matrix}] and C = [\begin{matrix} - 2 & - 8 & 6 \end{matrix}]$ , find A+B-C

$[\begin{matrix} 4 & 4 & - 5 \end{matrix}]$

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$[\begin{matrix} 4 & - 4 & 5 \end{matrix}]$

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$[\begin{matrix} 4 & 4 & 5 \end{matrix}]$

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$[\begin{matrix} - 4 & 4 & 5 \end{matrix}]$

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Solution

The correct option is C
$[\begin{matrix} 4 & 4 & 5 \end{matrix}]$

$A + B$ $= [\begin{matrix} 2 & - 3 & 9 \end{matrix}] + [\begin{matrix} 0 & - 1 & 2 \end{matrix}] = [\begin{matrix} 2 & - 4 & 11 \end{matrix}]$

$A + B - C$ $= [\begin{matrix} 2 & - 4 & 11 \end{matrix}] - [\begin{matrix} - 2 & - 8 & 6 \end{matrix}] = [\begin{matrix} 4 & 4 & 5 \end{matrix}]$

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Similar questions

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Q. Let

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If A=[2−39] , B=[0−12] and C=[−2−86], find A+B-C

The correct option is C [445] A+B=[2−39]+[0−12]=[2−411] A+B−C=[2−411]−[−2−86]=[445]

If $A = [\begin{matrix} 2 & - 3 & 9 \end{matrix}], B = [\begin{matrix} 0 & - 1 & 2 \end{matrix}] and C = [\begin{matrix} - 2 & - 8 & 6 \end{matrix}]$ , find A+B-C