Question

expand (3a-b)^2 plz fast
class 8​

Answer 1

Answer:

(3a - b)²

3a² - 2*3a*b + b²

9a² - 6ab + b²

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Answer 2

Answer:

(3a-b)^2 = (3a)^2 - 2(3a)(b) +(b)^2 =

9a^2 - 6ab + b^2

Step-by-step explanation:

using the property,

(x-y)^2 = x^2 -2xy +y^2