Question

A) x2 + 4x + 3 = 0

B) x2 + 3x - 4 = 0

C) x2 + x - 6 = 0

D) x2 + 6× + 9 = 0

E) x2 - 6x + 10 = 0

Por fabor, es URGENTE

Answer 1

Respuesta:

A) x = -0.5

B) x = 0.8

C) x = 2

D) x = -1.125

E) x = 2.5

Explicación paso a paso:

A) x2 + 4x + 3 = 0

2x + 4x = -3

6x = -3

x = -3 ÷ 6

x = 0.5

B) x2 + 3x - 4 = 0

2x + 3x = 4

5x = 4

x = 4 ÷ 5

x = 0.8

C) x2 + x - 6 = 0

2x + x = 6

3x = 6

x = 6 ÷ 3

x = 2

D) x2 + 6× + 9 = 0

2x + 6x = -9

8x = -9

x = -9 ÷ 8

x = -1.125

E) x2 - 6x + 10 = 0

2x + 10 = 6x

10 = 6x - 2x

10 = 4x

10 ÷ 4 = x

2.5 = x