Lesson 1.5 math worksheet will mark brainliest and points
only 5 questions

THIS ISNT FOR A TEST ITS JUST A WORKSHEET but i would be happy if this ws answered asap >-< thank you!

1. 17 + (-15) = 17 - 15     C

2. -5 - x = 14,   -5 - 14 = x,  x=-19        F

3. -5 - -14 = -5 + 14 = 9; all the others are negative.   B

4. 1885 - -2500 = 1885 + 2500 = 4385   G

5.  -18 - 27 - -15 = -18 - 27 + 15 = -3 - 27 = -30     B

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)