Add the following :
`2abc , 3abc and 7cab `

Add the following (i) 7abc , -5abc , 9abc , -8abc (ii) 2x^2y , -4x^2y , 6x^2y , -5x^2y

Add : -2abc , 3abc , abc

1.Add the following : 5/7 and 2/7

Add the following : 5xy , - 7xy and 3x^(2)

Add the following -3/7,-3/2,-3/4

Identify like terms in the following: abc, ab^(2)c, acb^(2), c^(2)ab, b^(2)ac, a^(2)bc, cab^(2)

Identify like terms in the following: 3a^(2)b, 2abc, -6a^(2)b, 4abc

Add the following on a number line: (3)/(7)and(4)/(7)

Using ruler and compasses only. Construct a triangle ABC with the following data: Base AB = 6 cm, BC = 6.2 cm and angle CAB=60^(@)

In a triangle Delta ABC , prove the following : 2 abc cos.(A)/(2) cos.(B)/(2) cos.(C )/(2) = (a+b+c)Delta