y=( x+3)²- ( x-2)² 4(5x+3) = ( y+1)²-(y²-1)

y=x²+9-x²+4 y=9 + 4= 13 4(5x+3) = ( y+1)²-(y²-1) 20x + 12 = y²+1 - y²+1 20x+12=2 20x= 2-12 20x=-10 x=-0.5