5) O valor da expressão (-10)2 - 102 é:
A o
B) 40
C) -20
D) -40
Soluções para a tarefa
Resposta:defapasfefaefa) x2 - 2x + 1 = 0 k) x2 – x – 1 = 0
b) x2 + 4x = 0 l) 5x2 +x + 4 = 0
c) x2 - 3 = 0 m) -2x2 – 8x – 1 = 0
d) x2 - 3x + 2 = 0 n) -6x2 +3x = 0
e) 4x2 - x = 0 o) -5x +x2 – 1 = 0
f) 9x2 - 1 = 0
g) 2x2 + 5x - 6 = 0
h) x2 - 5x + 1 = 0
i) -1 +x2 =0
j) 8x2 = 0a) x2 - 2x + 1 = 0 k) x2 – x – 1 = 0
b) x2 + 4x = 0 l) 5x2 +x + 4 = 0
c) x2 - 3 = 0 m) -2x2 – 8x – 1 = 0
d) x2 - 3x + 2 = 0 n) -6x2 +3x = 0
e) 4x2 - x = 0 o) -5x +x2 – 1 = 0
f) 9x2 - 1 = 0
g) 2x2 + 5x - 6 = 0
h) x2 - 5x + 1 = 0
i) -1 +x2 =0
j) 8x2 = 0a) x2 - 2x + 1 = 0 k) x2 – x – 1 = 0
b) x2 + 4x = 0 l) 5x2 +x + 4 = 0
c) x2 - 3 = 0 m) -2x2 – 8x – 1 = 0
d) x2 - 3x + 2 = 0 n) -6x2 +3x = 0
e) 4x2 - x = 0 o) -5x +x2 – 1 = 0
f) 9x2 - 1 = 0
g) 2x2 + 5x - 6 = 0
h) x2 - 5x + 1 = 0
i) -1 +x2 =0
j) 8x2 = 0a) x2 - 2x + 1 = 0 k) x2 – x – 1 = 0
b) x2 + 4x = 0 l) 5x2 +x + 4 = 0
c) x2 - 3 = 0 m) -2x2 – 8x – 1 = 0
d) x2 - 3x + 2 = 0 n) -6x2 +3x = 0
e) 4x2 - x = 0 o) -5x +x2 – 1 = 0
f) 9x2 - 1 = 0
g) 2x2 + 5x - 6 = 0
h) x2 - 5x + 1 = 0
i) -1 +x2 =0
j) 8x2 = 0a) x2 - 2x + 1 = 0 k) x2 – x – 1 = 0
b) x2 + 4x = 0 l) 5x2 +x + 4 = 0
c) x2 - 3 = 0 m) -2x2 – 8x – 1 = 0
d) x2 - 3x + 2 = 0 n) -6x2 +3x = 0
e) 4x2 - x = 0 o) -5x +x2 – 1 = 0
f) 9x2 - 1 = 0
g) 2x2 + 5x - 6 = 0
h) x2 - 5x + 1 = 0
i) -1 +x2 =0
j) 8x2 = 0a) x2 - 2x + 1 = 0 k) x2 – x – 1 = 0
b) x2 + 4x = 0 l) 5x2 +x + 4 = 0
c) x2 - 3 = 0 m) -2x2 – 8x – 1 = 0
d) x2 - 3x + 2 = 0 n) -6x2 +3x = 0
e) 4x2 - x = 0 o) -5x +x2 – 1 = 0
f) 9x2 - 1 = 0
g) 2x2 + 5x - 6 = 0
h) x2 - 5x + 1 = 0
i) -1 +x2 =0
j) 8x2 = 0 sfsf asefeq4314234324324234324234322222222222222222
1) Multiplicação:
(-10)*2=(-20)
2) Subtração:
(-20)-102=(-122)
Nenhuma das alternativas, caso errou a digitação só comentar nesta resposta