Question

Factorise: y2 - 81
ch- algebraic expressions and factorisation class 8th

Note: plz show the full method with appropriate explanation and no spam allowed ​

Answer 1

Answer:

y^2-81

=(y)^2-(9)^2

=(y+9)(y-9)

Answer 2

Answer:

(y-9)(y+9)

Step-by-step explanation:

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