Question

If a,b,y are zeroes of ax3 +bx2 +Cx +d , then show that 1/a+1/B+1/ y=- c/d?

Answer 1

Answer:

To group objects on the basis of floating or

sinking in water

Collect materials like dried leaves, a lemon,

lid of a pen, a sharpener, an eraser, thin

wooden sticks, a coin, a metal key, a sponge,

a sewing needle, pins and an iron nail.

Take a tumbler and fill water in it. One-by-one,

place each of these materials in the tumbler.

Observe whether it floats or sinks in water. Group

them in the table given below:

Object

Floats/sinks Denser than water or

less dense than water