Question

If A = `[(-2, 1),(0, 3)]` Then 2A² – 3A ______.

पर्याय

• `[(14, -1),(0, 9)]`

• `[(-14, 1),(0, 9)]`

• `[(14, 1),(0, -9)]`

• `[(14, -1),(0, -9)]`

Answer 1

If A = `[(-2, 1),(0, 3)]` Then 2A² – 3A `underlinebb([(14, -1),(0, 9)]`.

Explanation:

`2[(-2, 1),(0, 3)][(-2, 1),(0, 3)] -3[(-2, 1),(0, 3)]`

`2[(4, 1),(0, 9)] - [(-6, 3),(0, 9)] = [(8, 2),(0, 18)] - [(-6, 3),(0, 9)]`

= `[(14, -1),(0, 9)]`