Please help me anyone

(x + 5)² = - 3

Step-by-step explanation:

Given

x² + 22x + 28 = 12x ( subtract 12x from both sides )

x² + 10x + 28 = 0 ( subtract 28 from both sides )

x² + 10x = - 28

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(5)x + 25 = - 28 + 25

(x + 5)² = - 3

think the answer would beb

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)