Question

factorise :x^3 - x - 210​

Answer 1

Answer:

i think there is little mistake in your ques.

there is x^2 in place of x^3

Step-by-step explanation:

x^2 - x - 210 = 0

x^2 + 14x - 15x - 210 =0

x ( x + 14) - 15 ( x + 14) =0

x = 15 , x = -14

hope its helpful for u

Answer 2

Answer: 6

Step-by-step explanation:

x³-x = 210

assuming x³=210 (since x³ is a very large no., and effect of x will be negligible)

x =5.94 ≈ 6

now, putting 6 back in eqñ

= 6³-6

= 216 - 6

= 210