Question

(3x+2y+1)(3x-2y+1)

please tell me.​

Answer 1

Answer:

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Step-by-step explanation:

let’s use the identity (a+b)(a-b) = a^2 - b^2

so a = 3x and b = 2y+1 in this question

(3x+2y+1)(3x-2y+1)

= (3x)^2 - (2y+1)^2

= 9x^2 - (2y)^2 + 2(2y) + 2^2     <— (a+b)^2 = a^2 + 2ab + b^2

= 9x^2 - 4y^2 + 4y + 4

Answer 2

Step-by-step explanation:

here your answer

may be it helpful to you