Question 1

1. If L, M are the two roots of the equation: x² – 7x + 3 = 0, then the equation whose two roots are L+M and LM is …….

Accepted Answer

x² – 10 x + 21 = 0

Answer

x² – 21 x + 10 = 0

Answer

x² - 21 x - 10 = 0

Answer

x² + 10 x + 21 = 0

Question 2

1. If x = 2, x = -3 are the two roots of theequation: 2x² + ax + b = 0, then a + b = ………

Accepted Answer

-10

Answer

12

Answer

-1

Answer

-6

Question 3

In the opposite figure:

AB is tangent, then AB = .........

Accepted Answer

12

Answer

$\frac{9}{16}$

Answer

144

Answer

63

Question 4

In the opposite figure:

If XY// BC, then AC = …………

Accepted Answer

18

Answer

16

Answer

15

Answer

20

Question 5

If A + B = 90, tan A = $\frac{1}{3}$ , then tan B = ........

Accepted Answer

3

Answer

1

Answer

$\frac{9}{16}$

Answer

$\frac{9}{16}$

Question 6

2 sin 45 $\frac{1}{3}$ cos 45 $\degree$ cot 45 $\degree$ = ............

Accepted Answer

2 sin $\frac{1}{3}$

Answer

cos 60 $\frac{1}{3}$

Answer

tan $\frac{1}{3}$

Answer

2 cos 30 $\frac{1}{3}$

Question 7

If $\frac{1}{3}$ $\in$ ]0 , $\frac{\pi}{2}$ [, cos $heta$ = $\frac{3}{5}$ , then csc $heta$ sin $heta$ - tan $heta$ csc $heta$ = .........

Accepted Answer

$\frac{9}{16}$

Answer

zero

Answer

$\frac{9}{16}$

Answer

1

Question 8

If L is one of the roots of the equation x² - 4x + 1 = 0, then the value of the expression L² - 4L + 7 is .........

Accepted Answer

6

Answer

0

Answer

-1

Answer

-7

Question 9

In the opposite figure:

AD // BE // FC, then HF = ..........

Accepted Answer

3.75

Answer

3.6

Answer

6.3

Answer

4.8

Question 10

In the opposite figure:

The radius length of the circle = ............

Accepted Answer

6.5

Answer

9

Answer

4.5

Answer

6

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