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Ayudenme es para mañana solo esos me faltan de 24?

Ayudenme es para mañana solo esos me faltan de 24.

En resumen

1. X2 + 5x - 18 = 6 X2 + 5x - 18 - 6 = 0 X2 + 5x - 24 = 0 (X + 8)(x - 3) = 0 x + 8 = 0 x = - 8 x - 3 = 0 x = 3 2. X2 - 2x - 30 = 18 X2 - 2x - 30 - 18 = 0 X2 - 2x - 48 = 0 (X - 8)(x + 6) = 0 x - 8 = 0 x = 8 x + 6 = 0 x = - 6 3.

Mejor respuesta

1232100
1

1. X2 + 5x - 18 = 6

X2 + 5x - 18 - 6 = 0

X2 + 5x - 24 = 0

(X + 8)(x - 3) = 0

x + 8 = 0

x = - 8

x - 3 = 0

x = 3

2.

X2 - 2x - 30 = 18

X2 - 2x - 30 - 18 = 0

X2 - 2x - 48 = 0

(X - 8)(x + 6) = 0

x - 8 = 0

x = 8

x + 6 = 0

x = - 6

3.

X2 - 11 = 38

X2 = 38 + 11

X2 = 49

X = + / - 7

X = 7

X = - 7

4.

X2 - 9x + 11 = - 9

X2 - 9x + 11 + 9 = 0

X2 - 9x + 20 = 0

(x - 5)(x - 4) = 0

x - 5 = 0

x = 5

x - 4 = 0

x = 4

M.