1-mavzu: O’xshash xadlarni ixchamlash 1- misol


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7-sinf Algebra


247 – misol

1) (z+5)(z2 – 5z + 25) 3) (2x + 3y)(4x2 – 6xy + 9y2)

2) (y+2)(y2 – 2y + 4) 4) (4c – 5d)(16c2 + 20cd + 25d2)

248 – misol

1) (10a2 – 1)(100a4 + 10a2 + 1) 3) (2+2)



2) (a2b2 – 5a)(a4b4 + 5a3b2 + 25a2) 4) (2 + 2)

Ko’paytuvchilarga ajrating

249 – misol

1) (8a3 – 27b3) – 2a(4a2 – 9b2) 3) (a3 + b3) + (a+b)2

2) (64a3 + 125b3) + 5b(16a2 – 25b2) 4) (a3 – b3) + (a – b)2

250-misol . Ifodaning qiymatini toping

1) (x+2)(x2 – 2x + 4) – x(x – 3)(x+3), bunda x=2

2) (2x – 1)(4x2 + 2x + 1) – 4x(2x2 – 3), bunda x=0,5

3) (4x + 1)(16x2 – 4x + 1) – 16x(4x2 – 5), bunda x=

4) x(x+2)(x – 2) – (x – 3)(x2 + 3x + 9), bunda x=

251 – misol . Tenglamani yeching

1) (x+2)(x2 – 2x + 4) – x(x – 3)(x+3) = 26

2) (x – 3)(x2 + 3x +9) – x(x+4)(x – 4) = 21

3) (2x – 1)(4x2 + 2x + 1) – 4x(2x2 – 3) = 23

4) (4x + 1)(16x2 – 4x + 1) – 16x(4x2 – 5) =17

BOBGA DOIR

Ko’paytuvchilarga ajrating

252 – misol

1) 3a3 – 3 2) y3 – y 3)m3n – nm3 4) 2a3 – 2ab3



253 – misol

1) x4y2 – x2y4 3) 8 – 72x6y2

2) 7c2d2 – 63c2b2 4) 32a4b – 2a2b

254 – misol

1) 2a2 + 4ab + 2b2 4) 8p2 – 16p + 8

2) 2m2 + 2n2 – 4mn 5) 27a2b2 – 18ab + 3

3) 5x2 + 10xy + 5y2 6) 12m5n + 24m4n + 12m3n



255 – misol

1) 2c3 + 2d3 3) 2cd3 – 16c4 5) 7x2 – 56x2y3

2) 54x3 – 16 4) 2 – a5 6) 4a2b + 32a5b

Ko’paytuvchilarga ajrating

256 – misol

1) (x2+1)2 – 4x2 3) 4y2 – (y – c)2

2) (x2 + 2x)2 – 1 4) 81 – (y2+6y)2

257 – misol

1) (a2 + 2ab + b2) – c2 3) 1 – a2 – 2ab – b2

2) 1 – (x2 – 2xy + y2) 4) 4 +(–x2 – 2xy – y2)

258 – misol

1) a2 – b2 + a + b 3) x – y – x2 + y2 5) m5 – m3 + m2 – 1

2) a2 – b2 – a – b 4) x3 + y3 – x – 1 6) x4 + x3 + x + 1

259 – misol

1) 6(a+b) + (a+b)2 3) (a – b) + (b – a)2

2) 4(x – y) +3(x – y)2 4) (a – b)2 – (b – a)

260 – misol

1) 3(x+y)(x – y) + (x+y)2 3) 5(a – b)2 – (a+b)(b – a)

2) (x+y)3 – x(x+y)2 4) a(a – b)2 – (b – a)2

261 – misol

1) (y+z)(12x2 +6x) + (y – z)(12x2+6x)

2) (y – z)(12x2 – 6x) + (y – z)(12x2 – 6x)

3) (6x2 – 3) + 7x(6x2 – 3) – 4y(6x2 – 3)

4) 2x(8x – 4y) – 3y(8x – 4y) – (8x – 4y)

262 – misol

1) 18a2 – 27ab + 14ac – 21bc 2) 10x2 + 10xy + 5x + 5y

3) 35ax + 24xy – 20ay – 42x2 4) 48xz2 + 32xy2 – 15yz2 – 10y3

263 - misol

1) 16ab2 – 5b2c – 10c3 + 32ac2 2) 6mnk2 + 15m2k – 14n3k – 35mn2

3) – 28ac + 35c2 – 10cx + 8ax 4) – 24bx – 15c2 + 40bc +9cx

264 – misol. Ifodani soddalashtiring

1) (2x – 1)2 – 2(2x – 3)2 + 17

2) (3x+2)2 – 2(x – 1)2 – 7x2

3) 24y2 – (7y – 2)2 + (5y – 3)(5y+1)



4) (3y+1)(2y – 3) + (2y – 3)2 – 10y2


16-MAVZU: Algebrik kasrlarni qisqartirish

265-misol. Kasrlarni qisqartiring

1) 2) 5) 6)

266-misol

1) 2) 3) 4)



267-misol

1) 3) 5)

2) 4) 6)

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