A rectangular baby blanket has an area of 12 square feet. The blanket is 1 foot longer than it is wide. Which equation does NOT represent the area of the blanket? A) 1w = 12
B) w (w + 1) = 12
C) w^2 + w = 12
D) w^2 + w - 12 = 0

7

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

yes.. it's proven to be 36.

multiply then divide

step-by-step explanation: