Question

Escribe la ecuación cuadrática en la forma estándar

2×+1-2×=×2-2-2×-1

Answer 1

Respuesta:

2x+1-2 = x^2-2-2x-1

2x+(-1) = x^2+(-2-1)-2x

2x-1 = x^2+(-3)-2x

2x-1 = x^2-3-2x

2x-1-2x = x^2-2x-3-2x

-1 = x^2-4x-3

-1+3 = x^2-4x-3+3

2 = x^2-4x

2-2 = x^2-4x-2

0 = x^2-4x-2

x^2-4x-2 = 0

x = -(-4)+-√((-4)^2-4(1)(-2))/(2×1)

x = 4+-√(16+8)/2

x = 4+-√24/2 ; √24 = √(4×6) = √4 ×√6 = 2√6

x1 = 4+-2√6/2

x1=4/2+-2√6/2

x1 = 2+-√6

x1 = 2-√6

x2 = 2+√6

Explicación paso a paso: