REVIEWER IN MATH 9

It is an equation of degree 2 and in the form of ax² + bx + c = 0 where a, b and c are real numbers and a is not equal to zero.

• Linear Equation

• Linear Function

• Quadratic Equation

• Quadratic Function

Two numbers add up to 18 and gets 56 when multiplied. Find the two numbers.

• 4 and 14

• 13 and 5

• 1 and 17

• 10 and 8

Which of the following is not a symbol of inequality?

• <

• >

• =

The sum of the ages of two boys is 27 and the product of the ages is 50. What is the age of the elder boy?

• 25

• 2

• 27

• 15

Which coefficients of a quadratic equation is used to determine the sum of its roots?

• a and b

• b and c

• a and c

• a, b and c

Which reason best explains why the equation (x² + 3)(x - 2) cannot be transformed into a quadratic equation?

• The highest exponent of the product will be 3.

• The variable x has no numerical coefficient.

• The last term of the product is not a prime number.

• One of the two binomials has a negative operator.

Three of the equations below do not lead to a quadratic equation when simplified. Choose the one that leads to a second degree equation.

• (x² -7)(x + 2)

• (4x)(2x - 2)

• (7x²)(x - 4)

• (9x - 2)(9x² + 3)

• x² - x - 2 = 0

• x² - x + 2 = 0

• x² + x + 2 = 0

• x² + x - 2 = 0

Given the quadratic equation x² - 8x + 7, what is the sum of its roots?

• 8

• 7

• -8

• -7

Which of the following is the appropriate formula to be used to find the product of the roots of a given quadratic equation?

• -b/a

• c/a

• -c/a

• b/a