Which of the following is the factor of a² - 2a³ + 2a⁴ ?

• a ( 1 - 2a + 2a²)

• a² ( 2a + 2a²)

• a² ( 1 - 2a + 2a²)

• None of the above

Factor x² + xy

• x + y

• x²(x + y)

• x ( x² + y )

• x ( x + y )

Which of the following is equal to ( x + 3) (x + 2) ?

• x² + 5x + 6

• x² - 5x - 6

• x² + 5x - 6

• x² + 6x + 5

Which of the following is equal to (x + 3) ( x - 5)?

• x² + 2x - 15

• x² - 2x + 15

• x² - 2x - 15

• x² + 2x + 15

Factor x² + 19x + 84

• ( x - 7 ) ( x - 12 )

• ( x + 7) ( x + 12)

• ( x + 8 ) ( x + 11 )

• ( x - 8 ) ( x - 11 )

Factor x² - 9x + 20

• ( x - 5 ) ( x + 4 )

• ( x - 5 ) ( x - 4 )

• ( x - 10 ) (x - 2 )

• (x - 10 ) (x + 2 )

( a - 4) + ( a - 4 ) 2x = ?

• (a - 4 ) 2x

• (a - 4) (2x - 4)

• ( a - 4 )( 1 - 2 x )

• ( a - 4 ) ( 1 + 2x )

6x ( y - 2 ) + ( y - 2 )

• (6x - 1) ( y - 2 )

• (6x + 1 ) (y - 2 )

• (y - 2) (6x)

• (y - 2 ) ( 6x - 1)

ab² - cb² - 6a + 6c = ?

• (b² - 6) (a + c )

• ( b² + 6) ( a - c)

• (a - c ) (b - 6)

• (a - c) (b² - 6 )

axy + bcxy - az - bcz = ?

• (a + bc) (xy - z)

• (a - bc) (xy - z)

• (a - bc) (xy + z)

• (a + bc) (xy + z)