Question

simplify (a+b) ^2+(a-b) ^2 ,with process​

Answer 1

answer:

(a+b)^2 + ( a-b)^2

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

(+2ab -2ab cancel)

a^2 + b^2 +a^2 +b^2

Answer 2

Answer:

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

( a+b) ^2 + (a-b)^2

= a^2 + b ^2 + 2ab + [ a^2 + b ^2 - 2ab ]

= 2 ( a ^ 2 + b ^ 2)

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