Question

Q. Find (2x+3y) 2 using identity​

Answer 1

Question :

Find : (2x+3y)²

Solution :

Solving (2x+3y)² by identity a² + 2ab + b²

Here in the equation,

a = 2x

b = 3y

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↠(2x+3y)²

↠(2x)² + 2(2x)(3y) + (3y)²

↠4x² + (4x)(6y) + 9y²

↠4x² + 24xy + 9y²

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More Information :

More identities to know :

• (a+b)² = a² + 2ab + b²
• (a-b)² = a² - 2ab + b²
• a² - b² = (a+b)(a-b)
• (a+b+c)² = = a²+ b² + c² + 2ab + 2bc + 2ca
• (x+a)(x+b) = x²+(a+b)x + ab

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