Question

3x²-7x+2=0 equação de 2 grau

Answer 1

Δ = b² - 4.a.c

Δ = -7² - 4 . 3 . 2

Δ = 49 - 4. 3 . 2

Δ = 25

x = (-b +- √Δ)/2a

x' = (--7 + √25)/2.3     x'' = (--7 - √25)/2.3

x' = 12 / 6             x'' = 2 / 6

x' = 2

Bons estudos!

Answer 2

a= 3 b= -7 c= 2

∆= b^2-4.a.c

∆= (-7)^2-4.3.2

∆= 49-4.3.2

∆= 25

x1= -(-7)+5/2.3

x1= 12/6

x1= 2

x2= -7-5/2.3

x2= 2/6