Carry out the following divisions: `12a^8b^8 :- (-6a^6b^4)`

Carry out the following divisions: 28x^4 :-56x

Workout the following division: 96abc(3a-12)(5b-30):-144(a-4)(b-6)

Factorise each of the following . 8a^(3)-b^(3)-12a^(2)b+6ab^(2)

Factorise each of the following . 8a^(3)+b^(3)+12a^(2)b+6ab^(2)

Factorise each of the following : (i) 8a^3+b^3+12a^2b+6ab^2 (ii) 8a^3-b^3-12a^2b+6ab^2 (iii) 27-125a^3-135a+225a^2 (iv) 64a^3-27b^3-144a^2b+108ab^2 (v) 27p^3-1/(216)-9/2p^2+1/4p s

The mean of the numbers a, b, 8, 5, 10 is 6 and the variance is 6.80. Then which one of the following gives possible values of a and b ?

Solve the following quadratic equation by factorisation. 12 abx^(2)-(9a^(2)-8b^(2))x-6ab=0 .

How many significant figures are there in the following (a) 6.022 xx 10^(23) , (b) 0.080, (c ) 8.002

Find the variance of the following data 6,7,10,12,13,4,8,12 ?