Question

Pls tell me which one is the correct one

Answer 1

Option B

Explanation:

Given expression is,

(x² - 18x + 180)

Which is in the form of (ax² + bx + c)

To factorize the given expression, we will split b in two parts
`b_1` and
`b_2` so that,

`b=b_1+b_2`

And
`c=b_1* b_2`

If b = 18,

`b_1=10` and
`b_2=8`

c = 10 × 8 = 80

Therefore, (x² - 18x + 180) = x² - 10x - 8x + 80

= x(x - 10) - 8(x - 10)

= (x - 8)(x - 10)

Option B is the correct option.