5.

4xa + 4x2y2 — 12x2z2 + y^ − 6y2z2 + 931 (2x2 +No12 − 352

4x4

4x2 + y2 | 4x2y2+ya

4x2y2+y

-

6. 9x6 - 12x+10x4 - 28x3 + 17x2 − 8x+16(3x3 − 2x2+x−4 9x6

+ 16 (3x3 — :

6x3- 4x2+ 2x 4 - 24x3 +16x2 - 8x+16
- 24x3+16x2 - 8x+16

4x4 - 12x2+25x2 − 24x+16(2x2 − 3x+4
− 2 4x + 16 ( 2x2 − 3x + 4

424

3x-12x3+252
- 12x3+ 9x2

x+16 (2x2

4x2-6x+4 16x2 - 24x+16
16x2 - 24x+16

9. x2-3xy) 9x4-93x3y+310x22-297x33-1213 (9x2 – 66.xy

-y2/9x4-27x3y - 9x2y2

-66x3y+319x2y2-297x33
-66x3y+198x2y2+ 66xy3

+12132

Multiplying every term by 100,000,

1500x+15750-8750x=625x.

Here, multiplying every term by 100, we have 120x - 36x+10=40x+890,

44x = 880,

x = 20.

4. (1) 3(x-3)-2(x − 2) + x − 1 = x + 3 + 2(x+2)+3(x+1). 3x − 9−2x+4+x-1=x+3 + 2x + 4 + 3x + 3,

2x-6=6x+10,
- 4x=16,

x=- 4.

(2) (x − 9)+7(x − 5) = ?(x − 7) + 13.
45x-405+49x-245-587(x-7)+105,
94x-755-587(x-7),
470x-3775=567x – 3969,
- 97x= - 194,

x = 2.

5. (1) 5-3(4-x)+4(3-2x)=0.

5-12+3x+12-8x=0,

+74x

591-17x-4,

=578.

Multiplying by 100,

924x-1092 +7400x − 2625x+13300=57800,

5699x=45592, x = 8.

6. (a) x −7(4x-11) = 14(x − 5) — 19(8 − x) – 61. x-28x+77=14x − 70 −152+ 19x −61, - 60x=-360,

x=6.

9. (1) 783-5(9x+3)+12x+6(7 − 8x) = 0.

783-45x-15+12x+42-48x=0,

- 81x= - 810,

x = 10.

10. (1) 3x-49 − (2x+7) + 3x} = 13.
3x-36+8x+28 - 12x = 13,