Question

помогите!!!!!!!!!!!!!!!!111

Answer 1

$1) 5x+2(3x-2)=5(0.2x-1.8)\\5x+6x-4=x-9\\11x-x=-9+4\\10x=-5\\x=-5:10\\x=-0.5$

$2)(x-4)^2=(x-5)(x+5)-3\\x^2-8x+16=x^2-25-3 \\-8x+16=-28\\-8x=-28-16\\-8x=-44\\x=-44:(-8)\\x=5,5$