Question

a square + b square=?​

Answer 1

Answer:

• a² + b²
• a² + b² + 2ab - 2ab { 2ab -2ab = 0 }
• (a + b)² - 2ab

Step-by-step explanation:

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Answer 2

Answer:

${a}^{2} + {b}^{2} = {(a + b)}^{2} - 2ab$

Step-by-step explanation:

From the equation

${(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab$