Question

x2-5x+4=0 usando delta​

Answer 1

Explicação passo-a-passo:

A= 1 B= -5 C= 4

∆= b²-4.a.c

∆= (-5)²-4.1.4

∆= 25-16

∆= 9

X= -b±√∆/2.a

X¹= -(-5)+3/2

X¹= 5+3/2

X¹= 8/2

X¹= 4

--------------------------------------------------

X²= -(-5)-3/2

X²=5-3/2

X²= 2/2

X²= 1