Question

(4x + 11y)(4x - 11y)

Answer 1

Step-by-step explanation:

using using (a + b) (a - b) = a² - b²

where a = 4x , b = 11y

(4x)² - (11y)²

16x² - 121y²

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Answer 2

Answer:

16x^2-121y^2

Step-by-step explanation:

using identity

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

so,

(4x)^2-(11y)^2

16x^2-by^2