Question

2/3x-4/5y)^2+(2/3x+4/5y)^2

Answer 1

Answer:

8/9x^2+32/25y^2

Step-by-step explanation:

(2/3x-4/5y)^2+(2/3x+4/5y)^2

(2/3x)^2+(4/5y)^2-2(2/3x)(4/5y)+(2/3x)^2+(4/5y)^2+2(2/3x)(4/5y)

4/9x^2+16/25y^2-16/15xy+4/9x^2+16/25y^2+16/15xy

4/9x^2+4/9x^2+16/25y^2+16/25y^2

8/9x^2+32/25y^2