Question

(2x+1)^2-4(x^2+x+1)

(x+1)(x-1)-(x+3)(x-3)

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

Answer 1

Respuesta:

Ojala te sirva

Explicación paso a paso:

_ (2x+1)²- 4(x²+x+1)

=4x² + 4x + 1 - 4x²- 4x - 4

= - 3

_ (x + 1)(x - 1)-(x + 3)(x - 3)

= x² - 1 - (x² - 9)

= x² - 1 - x² + 9

= 8

_ (x+1)² - (x - 1)²+3x

= x² + 2x + 1 - (x²- 2x + 1) + 3x

= x² + 2x + 1 - x² + 2x - 1 + 3x

= 7x