" 12."a^(3)b-a^(2)b+5ab-5b

a^3b-a^2 b +5ab-5b

If a:b=2:3, then the value of (5a^(3)-2a^(2)b):(3ab^(2)-b^(3)) is :

If x=2a^(2)+3b^(2)-5ab, y=b^(2)-3a^(2)+7ab and z=6a^(2)-b^(2)+ab , find: x+y-z

If x=2a^(2)+3b^(2)-5ab, y=b^(2)-3a^(2)+7ab and z=6a^(2)-b^(2)+ab , find: x-y+z

a^(2)b^(3)x2ab^(2) is equal to: 2a^(3)b^(4)(b)2a^(3)b^(5)(c)2ab (d) a^(3)b^(5)

Multiply 8a^(2)b - 3ab + 5b^(2) by 6ab.

Multiply the b ^(3), 3b ^(2), 7 ab ^(5)

If a^(2) + b^(2)= 34 and ab= 12 , find: 3(a +b)^(2) + 5(a-b)^(2)

If a = (sqrt5 + 1)/(sqrt5 + 1) and b = (sqrt5 -1)/(sqrt5 + 1) , then find the value of (a) (a^(2) + ab + b^(2))/(a^(2) - ab + b^(2)) (b) ((a -b)^(3))/((a + b)^(3)) (c) (3a^(2) + 5ab + b^(2))/(3a^(2) - 5ab + b^(2)) (d) (a^(3) + b^(3))/(a^(3) - b^(3))

Factorise: 9a (3a-5b) - 12 a ^(2) (3a - 5b )