1
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $z$ is a non-real root of $x^7=1$, then $1+3 z+5 z^2+7 z^3+9 z^4+11 z^5+13 z^6=$

A

$\frac{14}{1-z}$

B

$\frac{-14}{1-z}$

C

$\frac{15}{1-z}$

D

$\frac{-15}{1-z}$

2
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $(2 k-1) x^2-2(3 k-2) x+4 k>0$ for every $x \in R$, then the sum of all possible integral values of $k$ is

A

21

B

27

C

36

D

28

3
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The sum of the least positive integer and the greatest negative integer in the range of the function $f(x)=\frac{x^2-5 x+7}{x^2-5 x-7}$ is

A

0

B

1

C

2

D

-1

4
AP EAPCET 2025 - 22nd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If $\alpha$ is a repeated root of multiplicity 2 of the equation $18 x^3-33 x^2+20 x-4=0$, then

A

$3 \alpha^2-8 \alpha+4=0$

B

$3 \alpha^2+8 \alpha+4=0$

C

$3 \alpha^2-\alpha-4=0$

D

$3 \alpha^2+2 \alpha-4=0$