Identify the converse of the statement "A - B: If x= 3, then x + 8 = 11." A) A – B: x= 3 if and only if x + 8 = 11. B) B – A: If x + 8 = 11, then x= 3. OC) A - B: 1f x = 3, then x + 8 + 11. D A - B: If x= 3. then x + 8 = 11. Question 4 (5 points) Saved​

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)

25.3

step-by-step explanation:

1st step

add 3+6

=9

multipy 9*3

=37