NEED ASAP! On a math test a student, Sarah, has to identify all the coefficients and constants of the expression 7m+6+b. Sarah say that 7 is a coefficient and 6 is a constant. Identify all the coefficients and constants of the expression. What error might Sarah have made?

7 and 1 are coefficients

Step-by-step explanation:

7 is next to m so it is a coefficient and 1 is a coefficient of b although you can not see it we already know it has a coefficient. 6 is a constant

45

step-by-step explanation:

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)