Question

All integers are ___________ numbers.

Even

Rational

Irrational

Odd

2:

1/2   is a ___________ number.

Recurring

Irrational

Rational

Natural

3:

 If a ∈ R and m,n are N, then am .an = ______________.    

am/n

am-n

am+n

amn

4:

       (a3c) (a2b2) = ________________.

a2c2

a3b3c

a5b2c

a2cb2

5:

      x0/40 = ________________.

¼

1

x/3

0

6:

      (-x)4 . (-x)8 = _____________.

-x12

x32

x4

x12

7:

 (3/2)-2 = ______________.

4/9

9/4

32/22

2/3

8:

 (x9)4/3= ______________.

x12

x36

x27

x13

9:

If z1 = 6+8i and z2 = 5 then z1+ z2 = _____________.

11+8i 

6+13i 

14+5i 

 12+5i

10:

 (i2)4 = ___________.

-1

i2

1

i

11:

√6.√-6=.............

-6

-6i       

6i

-6i2

12:

The additive inverse of 5/4 is __________.

4/5

5/4

-5/4

1

13:

 (8+3i) – (4-7i) = ______________.

4-3i

4+10i

12-10i

4-10i

14:

(4√x)1/3=.............

 x4/3

x1/2

x1/7

x1/12

15:


( x8/y6)3/2 = ___________.

X12/y9 

y9/x12

x8/y3   

  x24

16:

 (c2d5) (c/d2) = ___________.

c3d5

c2d4

c3d3

c/d

17:

Convert (x)4/5  into radical form ____________.

4√x
5√x
5√x4
4√x5

18:

a2-2ab+b2 = ____________.

a-b   

(a+b)2     

(a-b)2      

a2-b2

19:

If y+1/y = 5 then y2+1/y2 = ___________.

25

23

-23

27

20:

 (a+b) (a-b) = ___________.

(a-b)2 

a-b

a2 –b2

a2 +b2

21:

a3-b3-3ab(a-b) = ____________.

a3+b3 

(a+b)3

(a-b)3 

 a3-b3

22:

x2y3+5x2y3-7x2y3 = ___________.

x2y3

- x2y3

13 x2y3

-13 x2y3

23:

The complex conjugate of 7-8i __________________.

 7+8i

7-8i

8i-7

-7+8i

24:

-23i+4i+7i = ____________.

12i 

-12i     

12i2 

-12i3

25:

 (x4y2)(x2y3) = _______________.

x6y3

x6y5

x6y

x2y

26:

 (a+b) (a2-ab+b2) = ______________.

a3-b3

a3+b3  

(a+b)3

(a-b)3

27:

 (a+b)(a+b) = _____________.

a2+b2 

a2-b2  

(a+b)2

 (a-b)2

28:

If x+y = 4, x2 +y2 =8 then xy = _____________.

-4

4

 12

20

29:

 (x+8)(x-5)= __________.

x2 +8x-40

x2 -8x+40 

 x2 +3x-40

x2 +10x+30

30:

If a+b = 4, ab= 3 then a-b = ____________.

4

 2

6

answer me as soon as possible with step wise explanation​

Answer 1

Answer:

1--rational

2-rational

4-&a5b2c

5--0