6.1 Quadratic Equations and inequality

• Wiskunde
• Middelbare school
• havo
• Leerjaar 3

it is a quadratic equation.

ax​2​​+bx+c

1. TRUE
4. FALSE

it is a quadratic equation.

bx+ax​2​​+c

2. FALSE
3. TRUE

it is a quadratic equation.

ax​3​​+bx​2​​+c

1. TRUE
4. FALSE

it is a quadratic equation.

ax+bx+c

2. TRUE
3. FALSE

Bring a common factor outside the brackets.

5x​2​​+6x

1. 5(x+6)
2. x(5x+6)
3. 5x(x+6)
4. x​2​​(5+6)

is equal to...

x​2​​+7x+12

1. (x+7)(x+12)
2. (x+4)(x+3)
3. (x+4)(x-3)
4. (x-4)(x+3)

factorise

x​2​​+19x+18

1. (x-18)(x+1)
2. (x+2)(x+9)
3. (x+18)(x-1)
4. (x+1)(x+18)

= 12 is equal to...

x​2​​−4x

1. (x+6)(x+2)
2. (x+6)(x-2)
3. (x-6)(x+2)
4. (x-6)(x-2)

= 12 solve

x​2​​−4x

1. 6 V 2
2. 6 V -2
3. -6 V 2
4. -6 V 2

Write the general formula of a quadratic equation. y=.......

find a, b and c

4x​2​​−4x+5

1. -4, 4,5
2. 4, 4,-5
3. 4, 4,5
4. 4, -4,5

find c, a and b

3x−2x​2​​+7

1. 3, -2,7
2. 3, 7,-2
3. 7, -2,3
4. 7, 2,-3