Quiz no.2 Solving Quadratic Equations by Extracting Square R

1. Write the equation 2b² - 98 = 0 in the form of x² = k.

• a. 2b² = 0

• b. 2b² = 98

• c. 2b² = - 98

• d. 2b = 98

Which of the following quadratic equations can be solved by extracting the square root?

b.

• a. x² + 7x + 12 = 0

• 2x² + 7x+ 3 = 0

• c. 4𝑡² − 9 = 0

• d.3𝑟² + 2𝑟 = 0

Which of the following equations cannot be solved by Extracting the square roots

and factoring method?

• a. x² = 81

• b. x² - 144 = 0

• c. 3x² - 12 =0

• d. x² + x- 1 = 0

. Find the roots of the equation x² − 16 = 0.

• x = 4

• b. X = ± 4

• c. x = -4

• d. x = 0

. The result of squaring a binomial.

• a. Perfect Square Trinomial

• b. Difference of Binomial

• c. Difference of two Squares

• d. Sum & Difference of Binomials

Which of the following quadratic equation maybe solved more appropriately by factoring?

• a. 2x²-7²=0

• b. t² + 12t + 36 =0

• c. w² + 64 = 0

• d. 2s² + 8s – 10 = 0

Factor x² + 13 x – 30

• a. (x+15) (x+2)

• b. ( x+ 10)(x+3)

• c. (x-10)(x-3)

• d. ( x+ 15)(x-2)

Solve by factoring: 81 – 4x² = 0

• a. x= 9

  2

• b. x= - 9

  2

• c. x = ± 9

  2

• d. x = ± 2

Transform the equation x(x+5) = 2 to the standard quadratic form.

0

• a. x² +5x = 2

• b. x²+5x-2 =0

• c. x² + 5x+2= 0

• d. x² + 5x = -2

How many solutions does the equation x² - 121 = 0 have?

• 1

• 2

• 3

• no root