Expanding Binomials

Find the product:

• y² - 4y - 21

• y² + 10y - 21

• y² + 4y - 21

• y² - 4y + 21

Multiply: (r + 2)(r − 8)

• r ² − 16

• r ² + 6r - 16

• r ² − 6r + 16

• r² - 6r - 16

• r² + 6r + 16

Multiply (x + 3) (x + 7)

• x² + 10x + 10

• x + 10x + 10

• x² + 10x + 21

• 2x + 10

Simplify:

(x-7)²

• x²-49

• x²+49

• x²-14x+49

• x²-14x-49