1
TG EAPCET 2025 (Online) 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $\omega$ is a complex cube root of unity and $x=\omega^2-\omega+2$, then

A

$x^2-4 x+7=0$

B

$x^2+4 x+7=0$

C

$x^2-2 x+4=0$

D

$x^2+2 x+4=0$

2
TG EAPCET 2025 (Online) 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The product of all the values of $(\sqrt{3}-i)^{\frac{3}{7}}$ is

A

8

B

-8

C

$8 i$

D

$-8 i$

3
TG EAPCET 2025 (Online) 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0
$\alpha, \beta$ are the roots of the equation $\sin ^2 x+b \sin x+c=0$. If $\alpha+\beta=\frac{\pi}{2}$, then $b^2-1=$
A
$C$
B
$2 c$
C
$C^2$
D
$4 c^2$
4
TG EAPCET 2025 (Online) 2nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The number of integral values of ' $a$ ' for which the quadratic equation $a x^2+a x+5=0$ cannot have real roots is

A

infinite

B

20

C

19

D

5

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