Question

4X²-10x+4=0 Ajudem pfv

Answer 1

b²-4.a.c
-10²-4.4.4
100-64
36

10+6/8 = 2
10-6/8 = 1/2

Answer 2

4x² - 10x + 4 = 0

a = 4
b = -10
c = 4

Δ = b² -4 .a .c
 
Δ = (-10)² -4 . 4 . 4
Δ = 100 - 16 . 4
Δ = 100 - 64
Δ = 36

-b +- √Δ    /2.a

-(-10) +- √36    /2 . 4
10 +- 6   / 8

x' = 10 + 6   /8
x' = 16   /8
x' = 2

x" = 10 - 6  /8
x'' = 4 /8   (÷4)
x'' = 1/2

Resposta : S{ 1/2 e 2}