[" 9.Find "36-(-64)" and "(-64)-30." hu "L+b" ,verify that "(a+b)+c=a+(b+c)" ."],[" 10.If "a=-8,b=-7,c=6" ,"h" ,"a" ,"a" ."]

a=-8,b=-7,c=6 , verify that (a+b)+c=a+(b+c)

If a = - 8, b = -7, c = 6, verify that (a + b) + c = a + (b + c).

Verify that a+(b+c)=(a+b)+c by taking a= (-3)/(4) ,b= (5)/(6) ,c= (7)/(8)

If (a +b) : (b +c) : (c +a) ::6:7:8 & a+b+c= 14 then find c=?

If A=[0 6 7-6 0 8 7-8 0] , B=[0 1 1 1 0 2 1 2 0] , C=[2-2 3] Calculate AC, BC and (A" "+" "B)C . Also, verify that (A" "+" "B)C" "=" "A C" "+" "B C

If a + 2b = 4c , then prove that a^3+8b^3-64c^3+24abc=0

Fractorise a ^(3) - 8b ^(3) - 64 c^(3) - 24 abc

Fractorise a ^(3) - 8b ^(3) - 64 c^(3) - 24 abc