Question

please please please​

Answer 1

Hola :D,

Recordemos:

(a - b)² = a² - 2ab + b²

Entonces:

$H=\frac{x^{2} - 8x + 16-(x^{2} -12x + 36)+20}{2x} \\\\H=\frac{x^{2}-8x + 16 - x^{2}+12x-36+20 }{2x}$

Se va: x²- x², 16 + 20 - 36

Queda:

$H=\frac{4x}{2x}=2$

Answer 2

Respuesta:

H=2

Explicación paso a paso:

$H=\frac{(x-4)^{2} - (x-6)^{2} +20}{2x} \\\\H=\frac{(x-4)(x-4)-( (x-6) (x-6))+20}{2x} \\\\H=\frac{x^{2}-4x-4x+16-(x^{2} -6x-6x+36)+20}{2x} \\ \\ H=\frac{x^{2}-4x-4x+16-x^{2}-+6x+6x-36+20 }{2x} \\\\H=\frac{x^{2}-x^{2}-4x-4x +6x+6x+16+20-36 }{2x} \\\\ H=\frac{4x}{2x} \\\\H=2$