Question

factor if possible:
c^6 -343

Answer 1

here, c^6-343=c^6-7^3

Answer 2

Well, 343 is 7 cubed.
So we have a difference of cubes as c^6 = (c^2)^3.
A difference of cubes is factorised as follows:
a^3-b^3 = (a-b)(a^2+ab+b^2)
So, applying above, c^6-7^3 = (c^2-7)(c^4+7c^2+49)

Answer 3

(c^2)^3- 7^3

Answer 4

a^3-b^3 = (a-b)(a^2+ab+b^2

Answer 5

whoa!! i'm lost...

Answer 6

a= c^2 , b = 7

Answer 7

plug ,a= c^2 , b = 7 in a^3-b^3 = (a-b)(a^2+ab+b^2

Answer 8

we have c^6-343=(c^2-7)(c^4+7c^2+49)

Answer 9

got it now.?