Explanation:
Expand both classic quadratics and combine like terms to find the sum:
(a−b)2+(a+b)2
Answer:
2a² + 2b²
(a - b)² + (a + b)² ← expand both factors using FOIL
= a² - 2ab + b² + a² + 2ab + b² ← collect like terms
= 2a² + 2b²
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