Question

4x2+12x-7=0
Ayudaaa):

Answer 1

Respuesta:

Resposta:

Δ = b2 - 4.a.c

Δ = -122 - 4 . 4 . 7

Δ = 144 - 4. 4 . 7

Δ = 32

Há 2 raízes reais.

x = (-b +- √Δ)/2a

x' = (--12 + √32)/2.4

x' = 17,65685424949238 / 8

x' = 2,2071067811865475

x'' = (--12 - √32)/2.4

x'' = 6,343145750507619 / 8

x'' = 0,7928932188134524

otra respuesta

4x² - 12x - 7 = 0

(2x + 1)(2x - 7) = 0

2x + 1 = 0 atau 2x - 7 = 0

x = -1/2 atau x = 7/2

x² - 7x + 3 = 0

a = 1, b = -7, c = 3

x1.x2 = c/a = 3/1 = 3

x = 1

(a-1)x²+(3a-1)x-3a=0

(a - 1)1² + (3a - 1).1 - 3a = 0

a - 1 + 3a - 1 - 3a = 0

a - 2 = 0

a = 2

(2 - 1)x² + (3.2 - 1)x - 3.2 = 0

x² + 5x - 6 = 0

(x - 1)(x + 6) = 0

x = 1 atau x = -6

Explicación paso a paso:

air muchas formas de hacerlo escoger una espero que te ayude