Question

Воспользуйтесь формулой: (a+b) ^2 =a^2 +2ab+b^2 (2x +3y) ^2 =4x^2........+9y^2

Answer 1

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Готово!!Удачи:)))

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Answer 2

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

(2x +3y) ^2 =4x^2+12ху+9y^2

Answer 3

To use the formula (a+b)^2 = a^2 + 2ab + b^2 with the expression (2x + 3y)^2, we need to apply the formula to each term in the parentheses and then combine the results. Let's do it step by step:

Step 1: Square the first term (2x)^2: (2x)^2 = 4x^2

Step 2: Square the second term (3y)^2: (3y)^2 = 9y^2

Step 3: Multiply the first term (2x) by the second term (3y) and double the result: 2 * (2x) * (3y) = 12xy

Now, combine all the results from Steps 1, 2, and 3: (2x + 3y)^2 = 4x^2 + 12xy + 9y^2

So, the expanded form of (2x + 3y)^2 is: (2x + 3y)^2 = 4x^2 + 12xy + 9y^2