2. 1. Use the Theorem of Pythagoras to find the length of the line
2x from (1, 2) to (2, 4), and confirm that the
value is consistent with the length computed using
(b) Formula (5).
segment y
(a) Formula (4)

I uploaded the answer to a file hosting. Here's link:

cutt.ly/nz6VGda

b mark me branliest thx

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