To'la kvadrat tenglamani yechish — 7-sinf Algebra test savollari

1.Kvadrat tenglamani yeching: $x^2-5x+4=0$

• A)x=1 va x=4
• B)x=-1 va x=4
• C)x=1 va x=-4
• D)x=-1 va x=-4

2.Kvadrat tenglamani yeching: ${2x}^2-7x+3=0$

• A)x=3 va x=4
• B)x=3 va x=$\frac{1}{2}$
• C)x=1 va x=-3
• D)x=-1 va x=-3

3.Tenglamani yeching: $2x\left(x+2\right)=8x+3$

• A)$\frac{4+\sqrt{10}}{2}$ va $\frac{4-\sqrt{10}}{2}$
• B)$\frac{2+\sqrt{10}}{2}$ va $\frac{2-\sqrt{10}}{2}$
• C)$\frac{2+\sqrt{40}}{2}$ va $\frac{2-\sqrt{40}}{2}$
• D)$\frac{2+\sqrt{10}}{2}$ va $\frac{2+\sqrt{10}}{2}$

4.Tenglamani yeching. ${1998x}^2$−2000x+2=0

• A)1;$\frac{2}{1998}$
• B)-1;$\frac{2}{1998}$
• C)1;$-\frac{2}{1998}$
• D)$-1;-\frac{2}{1998}$

5.Ushbu $x^2$−x−2 kvadrat uchhadni chiziqli ko’paytuvchilarga ajrating

• A)(x−1)(x+2)
• B)(x−1)(x−2)
• C)(x+1)(x+2)
• D)(x+1)(x−2)

6.Kvadrat uchhadni chiziqli ko’paytuvchilarga ajrating. $x^2$−3x+2

• A)(x −1)(x+2)
• B)(x−2)(x+1)
• C)(x−1)(x−2)
• D)(x+1)(x+2)

7.Kvadrat uchhadni chiziqli ko’paytuvchilarga ajrating. $x^2$+x–2

• A)(x−1)(x−2)
• B)(x−1)(x+2)
• C)(1−x)(x+2)
• D)(x+1)(x−2)

8.Ushbu $x^2-13x+36=0$ tenglama ildizlarining o’rta proportsional qiymatini toping.

• A)4
• B)6
• C)6,5
• D)13

9.3va−2sonlari qaysi tenglamaning ildizlari ekanligini ko’rsating.

• A)$x^2-x=6$
• B)$x^2+x=6$
• C)$x^2+6=-x$
• D)$x^2+1=6x$

10.$x^2-18x+45=0$ tenglamaning katta ildizini toping

• A)−3
• B)3
• C)−15
• D)15