By what number must row 2 in the matrix 1 1 1 | 6
2 0 2 | -14
1 1 0 | 3

be multiplied for the matrix to change to

1 1 1 | 6
1 0 1 | -7
1 1 0 | 3

351°f

step-by-step explanation:

christopher is 272,195 year old

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