Question

class 9 please answer questions 3,5,6,7,8,9,10​

Answer 1

Answer:

3) c) 23.

5) 3

7)77760.

9)(2x - y + z) ^2

[a+b+c]^2=[a^2+b^2+c^2+2ab+2bc+2ac]

= {(2x) ^2+(-y) ^2+(z) ^2+2(2x)(-y) +2(-y)(z) + 2(2x)(z) }

= {4x^2+y^2+z^2 - 4xy -2yz + 4xz}

10)3x^2-x-4

3x * x + 3x - 4x - 4

3x(x + 1) - 4(x + 1)

(3x - 4)(x + 1)

6 & 8 questions are not clear!

Step-by-step explanation:

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Answer 2

Answer:

Retail Trade: It refers to the buying and selling of goods in small quantities for final consumption.

Wholesale Trade: It refers to the buying and selling of goods in bulk, i.e., the exchange of large quantities of goods meant for resale in local markets