Precalculus Examples

$[\begin{array}{c} 1 & 0 & 1 \\ - 1 & 21 & 0 \end{array}] + [\begin{array}{c} 2 & 2 & - 2 \\ - 3 & 4 & 3 \end{array}]$

Add the corresponding elements of $[\begin{array}{c} 1 & 0 & 1 \\ - 1 & 21 & 0 \end{array}]$ to each element of $[\begin{array}{c} 2 & 2 & - 2 \\ - 3 & 4 & 3 \end{array}]$ .

$[\begin{array}{c} 2 + 1 & 2 + 0 & - 2 + 1 \\ - 3 - 1 & 4 + 21 & 3 + 0 \end{array}]$

Simplify each element of the matrix $[\begin{array}{c} 2 + 1 & 2 + 0 & - 2 + 1 \\ - 3 - 1 & 4 + 21 & 3 + 0 \end{array}]$ .

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Simplify $2 + 1$ .

$[\begin{array}{c} 3 & 2 + 0 & - 2 + 1 \\ - 3 - 1 & 4 + 21 & 3 + 0 \end{array}]$

Simplify $2 + 0$ .

$[\begin{array}{c} 3 & 2 & - 2 + 1 \\ - 3 - 1 & 4 + 21 & 3 + 0 \end{array}]$

Simplify $- 2 + 1$ .

$[\begin{array}{c} 3 & 2 & - 1 \\ - 3 - 1 & 4 + 21 & 3 + 0 \end{array}]$

Simplify $- 3 - 1$ .

$[\begin{array}{c} 3 & 2 & - 1 \\ - 4 & 4 + 21 & 3 + 0 \end{array}]$

Simplify $4 + 21$ .

$[\begin{array}{c} 3 & 2 & - 1 \\ - 4 & 25 & 3 + 0 \end{array}]$

Simplify $3 + 0$ .

$[\begin{array}{c} 3 & 2 & - 1 \\ - 4 & 25 & 3 \end{array}]$

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