using suitable identies find product (4x+11y)(4x-11y)
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✔ (4x + 11y)(4x - 11y)
using (a + b)(a - b) ➡ a^2 - b^2
✔ (4x + 11y)(4x - 11y)
➡ (4x)^2 - (11y)^2
➡ 16x^2 - 121y^2
using (a + b)(a - b) ➡ a^2 - b^2
✔ (4x + 11y)(4x - 11y)
➡ (4x)^2 - (11y)^2
➡ 16x^2 - 121y^2
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