Saac wants the equation below to have no solution when the missing number is placed in the box. Box (x + 2) + 2 x = 2 (x + 6) + 4 x Which number should he place in the box? 2 4 6 8

5y

step-by-step explanation:

2x + 8

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

if im not mistaking its

step-by-step explanation: