Question

SOBRE FORMULA DE BHASKARA​

Answer 1

Resposta:

Explicação passo-a-passo:

fórmula : b^2-4.a.c

             -b+-Vdelta/2.a

a) x^2+5x+6=0

5^2-4.1.6

25-24 = 1 delta

-5+-1/2

-5-1/2= -6/2= -3

-5+1/2= -4/2= -2

B)

2x^2-6x-20=0

6^2-4.2.-20

36+160= 196

+6+-14/2.2

+6+14/4 = 20/4=5

6-14/4= -8/4 =

C)

x^2-3x-40=0

-3^2-4.1.-40

9+160=169

+3+-13/2

+3+13/2 =16/2=8

3-13/2= -10/2= -5

D)

x^2+3x-70=0

3^2 -4.1. -70

9+280 =289

-3+-17/2

-3-17/2= -20/2 = -10

-3+17/2= 14/2= 7