The rational numbers include which of the following?

positive integers
all square roots
negative integers
fractions

First, Third and Fourth options are correct.

Step-by-step explanation:

As we know that Rational numbers are those numbers which can be positive integers, negative integers and can be written in the form of p/q i.e. in fractions.

So, it is true for positive integers

It is true for negative integers.

It is true for fractions.

Hence, First, Third and Fourth options are correct.

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

16 is the coefficient

hope this