Question

Factorize :
1. x2 - 81​

Answer 1

Answer:

$(x + 9)( x - 9)$

Step-by-step explanation:

${x}^{2} - {9}^{2} \\ (x + 9)(x - 9) \: \: \: \: \: \: \: \: </p><p>\\ {x}^{2} - {y}^{2} = (x + y)(x - y)$

Answer 2

Answer:

(x+9)(x-9)

Step-by-step explanation:

x^2-81

x^2-9^2

we know. a^2 - b^2= (a+b)(a-b)

therefore the answer is (x+9)(x-9)

hope it helps u

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