Question

Q1. Profit or loss is always calculated on
Q2. The volume of cuboid with dimensions 3.x, 5xy & 2x² is
Q3. Pyramid is having all lateral faces as
1 m litres​

Answer 1

Answer:

1. Note- It is to be strictly noted that the Profit or Loss percentage is always calculated on the Cost Price of an item, until and unless it is mentioned to calculate the percentage on Selling Price.

Answer 2

Step-by-step explanation:

1: Note- It is to be strictly noted that the Profit or Loss percentage is always calculated on the Cost Price of an item, until and unless it is mentioned to calculate the percentage on Selling Price.

2:$$\begin{lgathered}= ({x}^{2} -2) (2x + 4)(x - 3) \\ = (2 {x}^{3} + 4 {x}^{2} - 4x - 8)(x - 3) \\ = 2 {x}^{4} - 6 {x}^{3} + 4 {x}^{3} - 12 {x}^{2} - 4 {x}^{2} + 12x - 8x + 24 \\ = 2 {x}^{4} - 2 {x}^{3} - 16 {x}^{2} + 4x + 24\end{lgathered}$$