Kembangan Algebra ( 2 Kurungan )

Kembangkan ( a + 2 ) ( b + 3 )

• = a ( b + 3 ) + 2 ( b + 3 )

  = ab + 3a + 2b + 6

• = a ( b + 3 ) + 2 ( b + 3 )

  = ab + 3a + 2b + 3

Kembangkan ( x + 1 ) ( 3x + 5 )

• = x ( 3x + 5 ) + 1( 3x + 5 )

  = 3x² + 5x + 3x + 5

  = 3x² + 8x + 5

• = x ( 3x + 5 ) + 1( 3x + 5 )

  = 3x² + 5x + x + 5

  = 3x² + 6x + 5

Kembangkan ( p - 2 ) (3p + q )

• = p (3p + q ) - 2 (3p + q )

  = 3p² + pq - 6p - 2q

• = p (3p + q ) + 2 (3p + q )

  = 3p² + pq + 6p - 2q

Kembangkan ( w + 2 ) (w + 1 )

• =w (w + 1 ) + w(w + 1 )

  =w² + w + 2w + 2

  = w² + 3w + 6

• =w (w + 1 ) + 2(w + 1 )

  =w² + w + 2w + 2

  = w² + 3w + 2

Kembangkan (r - 2s) ²

• = (r - 2s)2

  = 2r - 4s

• = (r - 2s) ( r - 2s )

  = r (r - 2s ) - 2s (r - 2s )

  = r² - 4sr + 4s²

Kembangkan ( 3u - 1)(2u + 3)

• =3u(2u + 3) + 1(2u + 3)

  = 6u² + 9u + 2u + 3

  = 6u² + 11u + 3

• =3u(2u + 3) - 1(2u + 3)

  = 6u² + 9u - 2u -3

  = 6u² + 7u - 3

Kembangkan (-2x - 1)(p - 4)

• = -2x(-p - 4) + 1(p - 4)

  = 2xp + 8x + p - 4

• = -2x(-p - 4) - 1(p - 4)

  = 2xp + 8x - p + 4

Kembangkan ( x + 6)²

• = ( x + 6)( x + 6)

  = x( x + 6) + 6( x + 6)

  = x² + 12x + 36

• =( x + 6) 2

  = 2x + 12

Kembangkan ( y - 7 ) ²

• =( y - 7 ) ( y - 7 )

  = y ( y - 7 ) - 7( y - 7 )

  = y² - 14x + 49

• =( y - 7 ) 2

  = 2y - 14

Kembangkan ( 2d + 8) (9m - d)

• =2d (9m - d) + (9m - d)

  =18dm - 2d² + 9m - d

• =2d (9m - d) + 8(9m - d)

  =18dm - 2d² + 72m - 8d