( x² - 2x + 1 )( x - 1 )

x³ - 3x² + 3x - 1

Step-by-step explanation:

(x² - 2x + 1)(x - 1)

Each term in the second factor is multiplied by each term in the first factor, that is

x²(x - 1) - 2x(x - 1) + 1 (x - 1) ← distribute parenthesis

= x³ - x² - 2x² + 2x + x - 1 ← collect like terms

= x³ - 3x² + 3x - 1

x³ + x² - x - 1

Step-by-step explanation:

(x²-2x+1)(x-1)

multiply the first number of each bracket so do x² times x which equals x³

next do x² multiplied by the next number in the second brackets which is -1 so it equals -x² (negative x²)

do 2x times x to get 2x²

do 2x times -1 to get -2x

do 1 times x to get x

do 1 times -1 to get -1

now you put these all together to get x³-x²+2x²-2x+x-1

you then have to simplify this to get x³+(2x²-x²=x²)+(-2x+x=-x)-1

the final answer is x³+x²-x-1

you will know you have your final answer when it cannot be simplified further

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490