Question

(a+b)²+(a-b)² please solve​

Answer 1

Answer:

2(a²+b²)

Step-by-step explanation:

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