Question

Write down the squares of following (Q.3 and 4).
3. (i) p + 5
(ii) x + 12
(iii) 5c + 2d
1
(iv) 9m +
4.
1
(viii)
13
1.67
1
.at +
2
1
3x
(vii) 7x +
(V) 3x+
(vi) (3y2 + 4z)
>
3
4.
(iii) 2x-5
1
(vii) x3 -
X
(iv) 7-89
1
(viii)
-
OS
3
51
NI
290
5
(1) t-3
(ii) h-13
1
1
(v) 10m -
(vi) 19x-
8x
5. Simplify:
(i) (a + 7)2 + (a - 7)2 (ii) (x + 1)2-(x - 1)2
6. Expand:
3
(1)
a-14b
8
(iii) (7 - y)2 + 14y
(iv) (a + b)2 - 2a²b2
1
.6² – 56²
5
be
2x2
(iv)
*****
3x?​

Answer 1

Answer

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Step-by-step explanation:

(i) 81

1

2

=1

So, the unit digit will be 1

(ii) 272

2

2

=4

So, unit digit will be 4

(iii) 799

9

2

=81

So, unit digit will be 1

(iv) 3853

3

2

=9

So, unit digit will be 9

(v) 1234

4

2

=16

So, unit digit will be 6

(vi) 26387

7

2

=49

So, unit digit will be 9

(vii) 52698

8

2

=64

So, unit digit will be 4

(viii) 99880

0

2

=0

So, unit digit will be 0

(ix) 12796

6

2

=36

So, unit digit will be 6

(x) 55555

5

2

=25

So, unit digit will be 5