Free Printable Q2M9 - PETA II

1.

Write √-9 in terms of imaginary

a)

± 3i

b)

± 3

c)

± 6i

d)

± 6

2.

Simplify √-23

a)

-√23

b)

23i

c)

23

d)

√23i

3.

$\sqrt[]{-1}=$

a)

$-1$

b)

$1$

c)

$i$

d)

$-i$

4.

Simplify

$\sqrt[]{-25}$

a)

5

b)

-5

c)

5i

d)

-5i

5.

Simplify

$\sqrt[]{-24}$

a)

12i

b)

$4\sqrt[]{6}i$

c)

$-2\ \sqrt[]{6}i$

d)

$2\ \sqrt[]{6}i$

6.

What is the formula for discriminant?

a)

$b^2+4ac$

b)

$-b^2-4ac$

c)

$b^2-4ac$

d)

-4ac

7.

What is the formula for writing quadratic equations using two roots?

a)

$x^2-\left(r_1+r_2\right)x+\left(r_1\times r_2\right)=0$

b)

$x^2-\left(r_1\times r_2\right)x+\left(r_1+r_2\right)=0$

c)

$x^2+\left(r_1+r_2\right)x-\left(r_1\times r_2\right)=0$

d)

$x^2-\left(r_1+r_2\right)-+\left(r_1\times r_2\right)=0$

8.

What is the type of solution for positive discriminant?

a)

One

b)

Two

c)

None

d)

Three

9.

If the value of discriminant is -7, what will be the type of solution?

a)

One

b)

Two

c)

None

d)

Three

10.

If the value of discriminant is 0, what will be the type of solution?

a)

One

b)

Two

c)

None

d)

Three

Q2M9 - PETA II - Easy Round

Total questions: 10

Worksheet time: 5mins

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