Question

( x + 7 )²=
(x – 12)²=
( x + 9 ) ( x – 12 )=
( x + 6 ) ( x + 8 )=
( x – 7 ) ( x – 10 ) =
Por favor las necesito para mañana. :(

Answer 1

Respuesta:

- x² + 14x + 49

- x² - 24x + 144

- x² - 3x -108

- x²+14x+48

- x² - 17x+70

Explicación paso a paso:

( x + 7 )²= x² + 14x + 49

( x - 12)²= x² - 24x + 144

( x + 9) (x - 12) = x² - 12x +9x - 108 = x² - 3x -108

(x+6)(x+8)= x²+8x +6x+48=x²+14x+48

(x-7)(x-10)= x² -10x-7x+70= x² - 17x+70

Answer 2

Explicación paso a paso:

(x+7)² = x²+2x×7+7²

= x²+14x+49

(x-12)² = x²-2x×12+12²

= x²-24x+144

(x+9)(x-12) = x×x-12x+9x-9×12

= x²-12x+9x-108

= x²-3x-108

(x+6)(x+8) = x×x+6x+8x+6×8

= x²+6x+8x+48

= x²+14x+48

(x-7)(x-10) = x×x-7x-10x-7×(-10)

= x²-7x-10x+70

= x²-17x+70