Question

Use expansion by minors to find the value of |P|, in terms of a, b, and c.

Answer 1

a b c
P= 1 3 5
2 4 6

Answer 2

the minor of a will be 3*6-5*4=18-20=-2
that of b will be 1*6-5*2=6-10=-4
that of c will be1*4-2*3=4-6=-2
so the answer is a(-2)-b(-4)+c(-2)=4b-2a-2c

Answer 3

@Sushi121212

Answer 4

So does that mean that a=-2, b=-4, and c=-2?

Answer 5

no |P|=4b-2a-2c

Answer 6

Oh, so is the question asking to find P, not a, b, and c? I think I misread the question!! :D

Answer 7

yeah

Answer 8

Oh, thank you so much!!!