Question

Me ajudem a resolver PORFAVOR 1=Resolva as equacoes a=4(x-3)+8(-x-9)=20 b=2x+7-8-3x=2x+16 c=X²-10x+9+0 d=X²-x-12+0 e=X²+7x=-6 f=X²-4x=5 g=5X²-4x=5 h=6X²+7x=0 i=X²+3x+=0 j=X²+2x+4=0 k=X²+8x+6=0 2=resolva o sistemas a=x+y=10 3X+Y=24 b=x-y=10 2x+3y=70 c=x+y=17 x-y=-1 d=4x+5y=14 21+3y=8

Answer 1

a= 4(x-3)+8(-x-9)=20
4x-12-8x-72=20
-4x=20+84
x=104/-4
x= -51