a) Formula una ecuación que represente lo planteado en el problema
3x2 + 54x = 0
a) (y – 7) (y + 7) = 0
7
(7 – 7) (7 + 7) = 0
(0) (14) = 0
0 = 0 correcto
-7
(- 7 – 7) (- 7 + 7) = 0
(-14) (0) = 0
0 = 0 correcto
b) y2 – 49 = 0
7
72 – 49 = 0
49 – 49 = 0
0 = 0 correcto
-7
(- 7)2 – 49 = 0
49 – 49 = 0
0 = 0 correcto
c) 10y2 = 490
7
10 (7)2 = 490
10 (49) = 490
490 = 490 correcto
-7
10 (-7)2 = 490
10 (49) = 490
490 = 490 correcto
d) 3y2 – 10 = 88 + y2
7
3 (7)2 – 10 = 88 + 72
3 (49) -10 = 88 + 49
147 – 10 = 137
137 = 137 correcto
-7
3 (-7)2 – 10 = 88 + (-7)2
3 (49) -10 = 88 + 49
147 – 10 = 137
137 = 137 correcto
a) x2 – 81 = 0
x1 = 9
x2 = -9
(x – 9) (x + 9) = 0
x – 9 = 0
x1 = 9
x + 9 = 0
x2 = -9
b) 5z2 – 20z = 0
z1 = 0
z2 = 4
5z (z – 4) = 0
5z = 0
z1 = 0
z - 4 = 0
z2 = 4
c) – 4w2 + 100w = 0
w1 = 0
w2 = 25
- 4w (w – 25) = 0
- 4w = 0
w1 = 0
w – 25 = 0
w2 = 25
d) 4s2 + 8s = 5s2 – 8s
s1 = 0
s2 = 16
4s2 - 5s2 + 8s + 8s = 0
- s2 + 16s = 0
-s (s – 16) = 0
- s = 0
s1 = 0
s – 16 = 0
s2 = 16
e) 5m2 + 8m = 8m + 500
m1 = 10
m2 = - 10
5m2 + 8m - 8m – 500 = 0
5m2 – 500 = 0
5m2 = 500
m2 = 500 / 5
m = √(100)
m1 = 10
m2 = - 10
¡COMPARTE TUS RESPUESTAS Y GANA CORAZONES!
Sé el primero en presumir tu tarea
a la comunidad