Question

5. If x + y = 3 and xy = - 18, find the value of x³+y³​

Answer 1

Step-by-step explanation:

Chlorophyll is a green pigment found in plants. Plants use chlorophyll and light to make food. People sometimes use chlorophyll as medicine. Common sources of chlorophyll used for medicine include alfalfa, algae, and silkworm droppings.

Answer 2

Step-by-step explanation:

Given,

tanθ+cotθ=5

Now squaring both sides we get,

⇒(tan2θ+cot2θ+2.tanθ.cotθ)=25

⇒tan2θ+cot2θ=25−2 [ Since tanθ.cotθ=1]

⇒tan2θ+cot2θ=23.