Question

--- URGENTE ---

Pfv me ajudem é para hoje ainda!!

Answer 1

Vamos escrever as equações em forma de $ax^2+bx+c=0$

$a)\\x^2-7=x+5\\\\x^2-7-x-5=0\\\\\boxed{x^2-x-12=0}$

B)

$x^2+11x=16x-6\\\\x^2+11x-16x+6=0\\\\\boxed{x^2-5x+6=0}$

C)

$(x+1)^2-(2x+3)^2=0\\\\(x+1)\cdot (x+1)-((2x+3)\cdot (2x+3))=0\\\\x^2+2x+1-(4x^2+12x+9)=0\\\\x^2+2x+1 -4x^2-12x-9=0\\\\\boxed{-3x^2-10x-8=0}$

D)

$(x-10)^2+x(x+17)=104\\\\(x-10)\cdot (x-10)+x^2+17x-104=0\\\\x^2-20x+100+x^2+17x-104=0\\\\\boxed{2x^2-3x-4=0}$