Question

factor the following sum of two cubes

z^3 +64

Answer 1

64 = what number cubed ?

Answer 2

so you need to know again that for sum and differents of two cubes there exist formules

you dont have learned again in your schoole ?

Answer 3

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

Answer 4

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

Answer 5

this right sure ?

Answer 6

Jenny ? what you have wrote before

Answer 7

huh

Answer 8

I dont understand

Answer 9

@Jenny4218 , can you answer @jhonyy9 's question: \(\Large 64=(???)^3 \)

Answer 10

can you think of a number such that when you multiply it by itself three times you'd get 64?
in other words, x * x * x = 64.... what's x?

Answer 11

4

Answer 12

yes right so than this formula will be how ?

Answer 13

not sure

Answer 14

why not just you need replace 4 in place of b and z in place of a

ok ?

Answer 15

oka!

Answer 16

(z+4)(z^2 -4z +4^2)

Answer 17

looks good... you may want to simplify 4^2

Answer 18

ok

Answer 19

can u help with this:

Answer 20

10x^3 + 80

Answer 21

factoriz out 10 and will get

10(x^3 +8)=

can you continue it ?