Math 9/ Quarter 1/ Review for quiz no. 1

A mathematical sentence of degree 2 that can be written in the standard for ax² + bx + c = 0, where a, b and c are real numbers and a not equal to 0.

• Linear equation

• Quadratic equation

• Radical equation

• Cubic equation

Which of the following is not quadratic equation?

• x + 3x² = 0

• x(x-3)-5 = 0

• 2 (x + 3)² = 0

• 3x – 2 = 0

What is the product of (2t – 1)(t + 5)?

• 2t² + 9t – 5

• 3t + 6

• 2t + 4

• 2t² – 9t + 5

When b = 0 in a quadratic equation and the terms are perfect square, it is easier to solve using what method?

• Factoring

• Extracting the square root

• completing the square

• Quadratic formula

• ± 3

• ± 9

• 3 and 9

• no solution

What is the greatest common factor of 4x² and 16x?

• 2

• 4

• 2x

• 4x

What is the factor of 100m² – 20m ?

• 5m (10m + 5)

• 10m (10m + 1)

• 20m (5m – 1)

• 20m (5m + 1)

What is the factor of x² + 7x + 12 = 0?

• (x + 4)(x + 3)

• (x – 4)(x – 3)

• (x – 4)(x + 3)

• (x + 4)(x – 3)

What is the factor of m² – 6m – 55 ?

• (m + 11)(m + 5)

• (m – 11)(m – 5)

• (m – 11)(m + 5)

• (m + 11) (m – 5)

What is the factor of 15x² + 10x – 2?

• (x + 1)(15x + 2)

• (x -1)(15x – 2)

• (x -1)(15x + 2)

• (x + 1)( 15x – 2)