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bija089 [108]
3 years ago
15

Pls explain this, I don't understand​

Mathematics
1 answer:
Rufina [12.5K]3 years ago
4 0

Answer:

AB = \left[\begin{array}{ccc}0&-2\\4&-12\\\end{array}\right]

Step-by-step explanation:

To obtain the first row of AB

Sum the products of corresponding elements in row 1 of A with elements in column 1 and 2 of B

To obtain the second row of AB

Sum the corresponding elements in row 2 of A with elements in column 1 and 2 of B, that is

AB = \left[\begin{array}{ccc}0(-1)+2(0)&0(3)+2(-1)\\-4(-1)+0(0)&-4(3)+0(-1)\\\end{array}\right]

      = \left[\begin{array}{ccc}0+0&0-2\\4+0&-12+0\\\end{array}\right]

      = \left[\begin{array}{ccc}0&-2\\4&-12\\\end{array}\right]

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3 years ago
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hodyreva [135]

Answer:

Proved

Step-by-step explanation:

Given

(n+5)^2-(n+3)^2

Required

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