Question

Exercício 11: Determine as raízes das equações do 2o grau:

a) x2 – 8x + 15 = 0
k) x2 – 6x + 9 = 0

b) x2 +10x + 25 = 0
l) x2 – 3x + 10 = 0

c) 3x2 + 4x + 1= 0
m) 2x2 + 5x – 3 = 0

d) -x2 + 12x – 20 = 0
n) 5x2 – 11x + 2 = 0

e) x2 + 5x + 6 = 0
o) x2 – 2x + 1 = 0

f) x2 – 7x + 12= 0
p) x2 – 4x + 5 = 0

g) x2 + 5x + 4 = 0
q) 4x2 + 11x – 3 = 0

h) x2 – 18x + 45 = 0
r) 6x2 – 13x + 6 = 0

i) -x2 – x + 30 = 0
s) 6x2 + x – 1 = 0
j) 7x2 + x + 2 = 0​​

Answer 1

Resposta:

35

Explicação passo-a-passo:

So fazer, 35^2+x*3=35