Question

Q.Factorise :
i) 1 - 27x3
PLEASE HELP​

Answer 1

Answer:

-80 is the answer

hope it's help you

Answer 2

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1 - 27 ×3

= 1 - 81

= 1² - 9²

= (1+9)(1-9)

Used identity:—

$\Large\bold{\boxed{{a}^{2} - {b}^{2} = (a + b)(a - b)}}$