-(x-4)²=(3-x)(3+x)

-(x-4)²=(3-x)(3+x) -(x²-8x+16)=3²-x² -x²+8x-16=9-x² -x²-x²+8x=9+16 8x=25 x=²⁵/₈ x=3¹/₈

-(x²-8x+16)=9-x² -x²+8x-16=9-x² 8x=9+16 8x=25 x=3,125