Question

If-1.2, a are the roots of 2x3 + x2-71-6=0 then u =
B.
C.3
D.-3
1. If the product of the roots of the equation 2+3.x2-10x+k=0 is 8 then k= ( )
A.S
B.-8
C. 8
D. none of these
2. The equation whose roots are 0,0,3,4 is
A. x-x3-12r2 = 0
B.r -r-12r2 = 0
Cr*-73-12x2 = 0
D..rtp. 12r2 = 0
4. The roots of 2r* - - 6x2 - +2=0 are
A. 1.1.2.
2
B. -1.-1.2.1
D. -1.-1.-2.
1
C. 1.1.-2.
z
5. The equation whose roots are 2 times the roots of the
( )
equation r-3x - 7=0
A. x - 6x - 14 = 0
B. x. 48x - 224 = 0
C. 3- 6x - 28 = 0
D. None of these
6. The equation whose roots are the negative of the roots of
the equation x'+ 3x3 + x2-x2+7x +2=0
A.X?+ 3x5 + x3 + x2-7x +2=0
B. X+3.x5 + x3 + x2 +7x -2=0
C. x² + 3x3+x²-x²- 7x-2=0
D. None of these
7. The multiple root (or) repeated root of r-5x2+3x +9=0
A. 3
B.-1
C. 1
D. none of these​

Answer 1

If-1.2, a are the roots of 2x3 + x2-71-6=0 then u =

B.

C.3

D.-3

1. If the product of the roots of the equation 2+3.x2-10x+k=0 is 8 then k= ( )

A.S

B.-8

C. 8

D. none of these

2. The equation whose roots are 0,0,3,4 is

A. x-x3-12r2 = 0

B.r -r-12r2 = 0

Cr*-73-12x2 = 0

D..rtp. 12r2 = 0

4. The roots of 2r* - - 6x2 - +2=0 are

A. 1.1.2.

2

B. -1.-1.2.1

D. -1.-1.-2.

1

C. 1.1.-2.

z

5. The equation whose roots are 2 times the roots of the

( )

equation r-3x - 7=0

A. x - 6x - 14 = 0

B. x. 48x - 224 = 0

C. 3- 6x - 28 = 0

D. None of these

6. The equation whose roots are the negative of the roots of

the equation x'+ 3x3 + x2-x2+7x +2=0

A.X?+ 3x5 + x3 + x2-7x +2=0

B. X+3.x5 + x3 + x2 +7x -2=0

C. x² + 3x3+x²-x²- 7x-2=0

D. None of these

7. The multiple root (or) repeated root of r-5x2+3x +9=0

A. 3

B.-1

C. 1

D. none of these