DUM10122 : Algebra

Simplify 8x² - 3x + 11 - 2x

• 8x² - 5x + 11

• 13x + 11

• 3x² + 11

• 14x²

Expand ( x - 3 )²

• x² + 3x + 3

• x² - 3x - 3

• x² - 6x - 9

• x² - 6x + 9

Factorize y² - 81

• ( y - 9 ) ( y - 9 )

• ( y - 9 ) ( y + 9 )

• ( y + 9 ) ( y + 9 )

• ( 9 - y ) ( 9 + y )

Camelia has RM y. She spends RM 2x and has a balance of RM15. Write a formula that connects x and y,

• y = x - 15

• y = x + 15

• y = 2x - 15

• y = 2x + 15

• x = 9, x = 2

• x = 6, x = 3

• x = -9 , x = -2

• x = -6, x = -3

• 0

• -7x

• 7

• -7

• 1

• 2

• 4

Solve for y if 6 - 2y = 12

• -3

• -2

• 3

• 6