Datrys quad11x(2+y)-3(x+4y)-(4x+2xy+5)-9(xy+2)

$$\quad 11 x ( 2 + y ) - 3 ( x + 4 y ) - ( 4 x + 2 x y + 5 ) - 9 ( x y + 2 )$$

Enrhifo

$$15x-12y-23$$

Camau Ateb

Defnyddio’r briodwedd ddosbarthu i luosi 11x â 2+y.

$$22x+11xy-3\left(x+4y\right)-\left(4x+2xy+5\right)-9\left(xy+2\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi -3 â x+4y.

$$22x+11xy-3x-12y-\left(4x+2xy+5\right)-9\left(xy+2\right)$$

Cyfuno 22x a -3x i gael 19x.

$$19x+11xy-12y-\left(4x+2xy+5\right)-9\left(xy+2\right)$$

I ddod o hyd i wrthwyneb 4x+2xy+5, dewch o hyd i wrthwyneb pob term.

$$19x+11xy-12y-4x-2xy-5-9\left(xy+2\right)$$

Cyfuno 19x a -4x i gael 15x.

$$15x+11xy-12y-2xy-5-9\left(xy+2\right)$$

Cyfuno 11xy a -2xy i gael 9xy.

$$15x+9xy-12y-5-9\left(xy+2\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi -9 â xy+2.

$$15x+9xy-12y-5-9xy-18$$

Cyfuno 9xy a -9xy i gael 0.

$$15x-12y-5-18$$

Tynnu 18 o -5 i gael -23.

$$15x-12y-23$$

Ehangu

$$15x-12y-23$$

Camau Ateb

Defnyddio’r briodwedd ddosbarthu i luosi 11x â 2+y.

$$22x+11xy-3\left(x+4y\right)-\left(4x+2xy+5\right)-9\left(xy+2\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi -3 â x+4y.

$$22x+11xy-3x-12y-\left(4x+2xy+5\right)-9\left(xy+2\right)$$

Cyfuno 22x a -3x i gael 19x.

$$19x+11xy-12y-\left(4x+2xy+5\right)-9\left(xy+2\right)$$

I ddod o hyd i wrthwyneb 4x+2xy+5, dewch o hyd i wrthwyneb pob term.

$$19x+11xy-12y-4x-2xy-5-9\left(xy+2\right)$$

Cyfuno 19x a -4x i gael 15x.

$$15x+11xy-12y-2xy-5-9\left(xy+2\right)$$

Cyfuno 11xy a -2xy i gael 9xy.

$$15x+9xy-12y-5-9\left(xy+2\right)$$

Defnyddio’r briodwedd ddosbarthu i luosi -9 â xy+2.

$$15x+9xy-12y-5-9xy-18$$

Cyfuno 9xy a -9xy i gael 0.

$$15x-12y-5-18$$

Tynnu 18 o -5 i gael -23.

$$15x-12y-23$$