Activity in Mathematics 9

What is the standard form of a quadratic equation?

• y=mx+b

• ax2+bx=c

• ax2+bx+c=0

• y=ax+b

Which of the following BEST describes a quadratic equation?

• An equation with variable x

• An equation with two terms

• An equation with a degree of two

• An equation in standard form

Which of the following is NOT an example of quadratic equation?

• xx+1-25=0

• x=x+24x-6

• x2+2x=6

• x+6x-2=0

In the expression 3x+7+4x2=4x-x2+2, what are the a, b, and c?

• 5, -1, and 5, respectively

• 4, 3, and 7, respectively

• 3, -1, and 5, respectively

• -1, 4, and 2, respectively

If the roots of a number are ±9, what is the possible number?

• -81

• 99

• 81

• -99

Which of the following quadratic equation can be readily solved by extracting square roots?

• x2+4x+4=0

• 4x2+4x+1=0

• x2-25=0

• xx+5=0

What is the GCF of the expression: (24x2+12x)?

• 24x2

• 12x

• 24x

• 12x2

What is the characteristic of the square root of a negative number?

• Whole number

• Fraction

• Imaginary number

• Real number

Given x2-7x, what way of factoring can be used?

• Difference of two squares

• Common Monomial

• Perfect square trinomial

• General trinomial

Given 8x3-27, what way of factoring can be used?

• Difference of two cubes

• Perfect square trinomial

• Difference of two squares

• General trinomial