Question

respondam pra mim por favor nao consigo fazer

A)x²-5X+6=0

B)2x²-8x+8=0

C)2x²-8x-10=0

D)3x²-7x+2=0​

Answer 1

A) x²-2x-3x+6=0

x*(x-2)-3(x-2)=0

(x-2)*(x-3)=0

x-2=0

x-3=0

x=2

x=3

B)x²-4x+4=0

(x-2)²=0

x-2=0

x=2

C) x²-4x-5=0

x²+x-5x-5=0

x*(x+1)-5(x+1)=0

(x+1)*(x-5)=0

x+1=0

x-5=0

x=-1

x=5