Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). Consider the equation.
4(pr + 1) = 64
The value of x in terms of p is
The value of x when p is -5 is

i dont know sorry

step-by-step explanation:

is there any photos or whatever?

idk

step-by-step explanation:

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