Question

x elevado a 2 -7x +12=0

Answer 1

x^2 -7x+ 12 =0
/\=(-7)^2 - 4*1*12
/\=49-48
/\=1

x1= -(-7)+-1 /2
x1= 7+1/2=8/2
x1=4

x2=7- 1 /2 = 3


v= ( 4 e 3 )