Question

solve this to become brainlist
(ax+by)^2 + (bx-ay)^2

Answer 1

Answer:

Step-by-step explanation:

(ax^2 + by^2 + 2axby) + ( bx^2 + ay^2 - 2bxay)

= ax^2 + by^2 + 2axby + bx^2 + ay^2 - 2bxay

= ax^2 + by^2 + bx^2 + ay^2 ( + 2axby and - 2bxay gets cancelled)

= ax^2 + bx^2 + ay^2 + by^2

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

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