Question

factorise y^3-10y+3

Answer 1

\[y ^{3}-10y+3=0\]
\[y ^{3}-10y=-3\]
\[-9y ^{3}=-3\]
\[y ^{3}=\frac{ -3 }{ -9 }\]
\[y ^{3}=\frac{ 1 }{ 3 }\]

Answer 2

@Yacoub1993
Check the third step.

Answer 3

y^3 and 10y not like terms???

Answer 4

ohh ok

Answer 5

x-3 is a factor

Answer 6

mistaken didnt focus sorry

Answer 7

\[(x-3)(x^2+3x-1)\]

Answer 8

go ahead
next

Answer 9

y you are putting it equal to zero??? @Yacoub1993

Answer 10

its finished like that

Answer 11

so that i factorize it

Answer 12

no no basically what you are trying to find a value of y such that if you put it in this equation will result in zero not to factorize it

Answer 13

ahha understood
@rizwan_uet u should be my tutor for real :)

Answer 14

thanks Yacoub i will help you if you need

Answer 15

you have this
y^3-10y+3
now we can write
y^3+3y^2-3y^2-y-9y+3
y^3-3y^2+3y^2-9y-y+3
y^2(y-3)+3y(y-3)-1(y-3)
can you do the last step??