Tìm ma trận nghịch đảo

{ 1 0 2 }

A={ 2 -1 0 }

{ 0 1 3 }

step-by-step explanation:

what are the statements? and what do you mean by "216 2 1 6"?

16.80 times .20= 3.36

step-by-step explanation:

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb