Whoever answers this correctly, I will give brainliest Which expressions are equivalent to this expression? (y+y+y+3z)
Select each correct answer. Make sure your choices have the same amount of y’s and z’s

A. 3 + y + 3z

B. 3(y+z)

C. 3y + z

D. 2y + 2z + y + z

STUDY KID HOPE THIS HELPS

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

step-by-step explanation: