(3x +4y) (3x - 4y) - (3w+4y) ^2 please give me answer

1.	(3x +4y) (3x - 4y) - (3w+4y) ^2 please give me answer
Answer» Given EQUATION is (3X + 4Y)(3x - 4y) - (3x + 4y)^2 We know that (a + b)(a - b) = a^2 - b^2 ⇒ (3x)^2 - (4y)^2 - (3x + 4y)^2 ⇒ 9x^2 - 16y^2 - [9x^2 + 16y^2 + 24xy] ⇒ 9x^2 - 16y^2 - 9x^2 - 16y^2 - 24xy ⇒ -32y^2 - 24xy. Hope it helps!

Answer»

Given EQUATION is (3X + 4Y)(3x - 4y) - (3x + 4y)^2

We know that (a + b)(a - b) = a^2 - b^2

⇒ (3x)^2 - (4y)^2 - (3x + 4y)^2

⇒ 9x^2 - 16y^2 - [9x^2 + 16y^2 + 24xy]

⇒ 9x^2 - 16y^2 - 9x^2 - 16y^2 - 24xy

⇒ -32y^2 - 24xy.

Hope it helps!

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(3x +4y) (3x - 4y) - (3w+4y) ^2 please give me answer

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