Qudratic equations

 $16x^2–3=(2x+5)(5x–3)$  State whether this is a quadratic equation or not

• Yes

• No 

• Ganeev

Solve This

• x=5,6

• x=-2,-6

• x=2,-6

• x=-2,6

Solve

• x=-12/5,-4

• x=12/5,4

• x=15/4,7

• x=19,2

Solve

• x=12,33

• x=6,40/13

• x=-6,-40/13

• x=2,3

Find the values of k for which the roots are real and equal in each of the following equation

4x2 + kx + 9 = 0

• 12

• 12 or -12

• 10,10

• 20,0

x2 – 2(5 + 2k)x + 3(7 + 10k) = 0 find for real and equal roots

• k=3,1/2

• k=3,4

• k=2,1/2

• k=0,2

Divide 29 into two parts so that the sum of the squares of the parts is 425.

• 14,12

• -13,16

• 13,16

• 10,2

The speed of a boat in still water is 8km/hr. It can go 15 km upstream and 22 km downstream in 5 hours. Find the speed of the stream.

• 4km/hr

• 5km/hr

• 3km/hr

• 10km/hr

. A fast train takes one hour less than a slow train for a journey of 200 km. If the speed of the slow train is 10 km/hr less than that of the fast train, find the speed of the two trains.

• x=30

• x=50

• x=-40

• x=09

The roots of the equation 7x² + x – 1 = 0 are

• real and distinct

• real and equal

• not real

• none of these