Question

(1/3x-1/4y)(1/3x+1/4y)

Answer 1

Answer:

(1/3x-1/4y)(1/3x+1/4)

(4-3/12)(4+3/12)

(1/12)(7/12)

7/144

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Answer 2

We can use the identity,

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

Hence,

(1/3x-1/4y)(1/3x+1/4y) = (1/3x)^2 - (1/4y)^2

Your answer = 1/9x^2 - 1/16y^2