First Quarter Examination

The greatest common factor of 21 and 45 is

• 3

• 7

• 5

• 6

The product of (5x + 7y) and (5x – 7y) is

• 25x² – 70xy – 49y²

• 25x² + 70xy – 49y²

• 35x² - 35y²

• 25x²– 49y²

(0.2m + 3) (0.2m – 3)

• 0.4m² – 9

• 0.4m² + 9

• 0.04m² + 9

• 0.04m² – 9

In the process of factoring out the greatest common factor from 5x²2y + 7xy, which option accurately represents the factorization?

• 5xy

• xy

• x³y

• x²y²

Determine the greatest common monomial factor in 3x² – 6x.

• 6

• 3x

• 3x² 

• 6x

Find the product of (x + 7) and (x – 7).

• x² – 14xy – 49

• x² - 14xy + 49

• x² + 49

• x² – 49

Consider the expression (4y³ + 9x²)². Which of the following options correctly represents the expanded form of the expression?

• 16y⁶ + 81x⁴

• 16y⁵ + 36y³x² + 81x⁴

• 16y⁶ + 72y³x² + 81x⁴ 

• 16y⁶ - 81x⁴

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

• x² + 6x + 9

• x² + 3x + 6

• x² + 3x + 9

• x² + 9x + 6

The product of (2y – 5)(2y – 5) is

• 4y² + 20y + 25

• 4y² - 20y + 25

• 4y² - 12y - 25

• 4y² + 12y + 25