Algebra

Standard form of a quadratic equation

• y=x²
• y=ax²+bx+c
• y=mx+b
• y=x

3x² - 4 is a quadratic

• true
• false

The solutions of the quadratic equation
x²-5x+6=0 are

• x=1 or x=-6
• x=3 or x=2
• x=-3 or x= 2
• x=-1 or x=6

In the expression 4x²-5x+9 the leading coefficient is

• 9
• -5
• -4
• 4

The non-zero root of the equation 3x - 5x² = 0 is_____

• 3⁄5
• 5⁄3
• -3⁄5
• -5⁄3

Is (x +1)² = x² + 2x + 1 is a quadratic equation?

• YES
• NO

• A

• B

• C

• D

Which is another way of correctly expressing
 (x  - 3)(x - 3)?

• (x² - 3²)
• (x² - 3)
• (x + 3)(x - 3)
• (x - 3)²

( x - 1 ) ( x + 3 ) = 0
so, the roots are 1 and

• 0
• -1
• 3
• -3

By using factorisation method, the roots of 2x² - x - 15 = 0 are

• -2.5 and 3
• 2.5 and -3
• 2.5 and 3
• -2.5 and -3