1.(x+4)²+(x-4)² 2.(5-y)²+(5y-1)² kak tolong disederhanakan ya,makasih

1.) (x+4)²+(x-4)²
=>x²+8x+16+x²-8x+16
=>2x²+32

2.) (5-y)²+(5y-1)²
=>25-10y+y²+25y²-10y+1
=>26y²-20y+26