" 11."5a-[a^(2)-{2a(1-a+4a^(2))-3a(a^(2)-5a-3)}]-8a

(5a^(3)-4a^(2)+3a+18)/(a^(2)-2a+3)

Find : (16a^(2)-2a-3)/(8a^(2)+11a+3) div (3a^(2)-2a-1)/(3a^(2)-11a-4)

What must be added to the sum of 2a^(2)-3a+7,-5a^(2)-2a-11 and 3a^(2)+5a-8 to get 0?

Calculate: 5a^2b-2a^2b-3a^2b+8a^2b

Add the following 5a+2a^2-3a^3+8, -4a^2 +5a^3 -9, -2a+6a^2 -3a^3 , -a+4a^2 -9, 4-a-2a^2 +3a^3

Find each of the following products: (i) (x + 3) (x - 3) (ii) (2x + 5)(2x - 5) (ii) (8 + x)(8 - x) (iv) (7x + 11y) (7x - 11y) (v) (5x^(2) + (3)/(4) y^(2)) (5x^(2) - (3)/(4) y^(2)) (vi) ((4x)/(5) - (5y)/(3)) ((4x)/(5) + (5y)/(3)) (vii) (x + (1)/(x)) (x - (1)/(x)) (viii) ((1)/(x) + (1)/(y)) ((1)/(x) - (1)/(y)) (ix) (2a + (3)/(b)) (2a - (3)/(b))

3(5a-7)-2(9a-11)=4(8-13-1)

Find the value of the expressions, when a= -1" and "b= 3 5a^(2)+4ab^(2)-8a^(2)b .

Verify the following: (i) ((3)/(4)+(-2)/(5))+(-7)/(10)=(3)/(4)+((-2)/(5)+(-7)/(10)) (ii) ((-7)/(11)+(2)/(-5))+(-13)/(22)=(-7)/(11)+((2)/(-5)+(-13)/(22)) (iii) -1+((-2)/(3)+(-3)/(4))=(-1+(-2)/(3))+(-3)/(4)