Question

Elimina su paréntesis y simplifica.

A)3x-(x-x²)

B)5x-(2x-3x²)

C)(7x²+3)-(5x²-2

D)(4x²-5)-(2x²+2

Answer 1

Explicación paso a paso:

A)

$3x - x + {x}^{2} \\ = 2x + {x}^{2}$

B)

$5x - (2x - 3 {x}^{2} ) \\ = 5x - 2x + 3 {x}^{2} \\ = 3x + 3 {x}^{2}$

C)

$(7 {x}^{2} + 3) - (5 {x}^{2} - 2) \\ = 7 {x}^{2} + 3 - 5 {x}^{2} + 2 \\ = 2 {x}^{2} + 5$

D)

$(4 {x}^{2} - 5) - (2 {x}^{2} + 2) \\ = 4 {x}^{2} - 5 - 2 {x}^{2} - 2 \\ = 2 {x}^{2} - 7$