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Ecuaciones de primer grado

100

2x + 6 = 12

x = 3

200

2x - 3 = -5 + x

x = -2

300

(7x + 4)/3  = x - 1

x = -7/4

400

(x + 1)/2  =  (-3x -5)/5

x = -15/11

500

(2x+ 4)/3   + (5x - 1)/2 = (3x+ 2)/4

x = -4/29

Productos notables

100

(a + 2b)²

a² + 4ab + 4b²

200

(4 - x)²

16 - 8x + x²

300

(1 - a)(1 + a)

1 - a²

400

(2 - 3y)³

8-36y+54y²-27y³

500

(1/2 x - 2/3)²

1/4 x²- 2/3 x + 4/9

Ecuaciones de 2 grado

100

x²+6x + 8 = 0

x = -4, x = -2

200

x² + 7x + 12 = 0

x = -4,    x = -3

300

x²-5x + 6 = 0

x = 2,   x = 3

400

2x²-5x + 3 = 0

x = 0.5,    x = -3

500

2x³+3x = 2x (x²+3) - 2

x = 2/3

factorizar x2 + bx + c

100

x²-2x-15

(x - 5)(x + 3) = (x + 3)(x - 5)

200

x²-6x + 8

(x - 2)(x - 4)

300

x² - 3x -54

(x - 9)(x + 6)

400

x² + 4x - 45

(x + 9)(x - 5)

500

x² - x + 12

No tiene solución

factorizar ax2 + bx +c

100

3x²- 5x - 2

(3x - 2)(x - 3)

200

5x² + 7x + 2

(5x + 2)(x + 1)

300

4x² - 7x - 2

(4x + 1)(x - 2)

400

3x² + 14x + 8

(3x + 2)(x + 4)

500

x²+ 15x -16

(x - 1)(x + 15)