The coefficient of `x^2` in `(3x^2 - 5)( 4 + 4x^2)` is : (a) `8` (b) `-8` (c) `-3` (d) `3`​

The sum of the coefficients in the terms of 2x^2y-3x y^2+4x y is -3 (b) 3 9 (d) 5

If ( x- 3 )/5 - 2 = -1 , then x is equal to ( a ) 8 ( b) 3 ( c ) -7 ( d ) 2

If 2x+y=5 and 3x-4y=2, then the value of 2xy is (a) 4 (b) 6 (c) 8 (d) 10

What is the coefficient of x^(5) in the expansion (1-2x+3x^(2)-4x^(3)+……oo)^(-5) ?

Add: 5x^(2) + 3x - 8, 4x + 7 - 2x^(2) and 6 - 5x + 4x^(2)

1/3+1/x=3 , then x= 7/3 (b) 2/3 (c) 4/3 (d) 8/3

Test the following functions for continuity (1 ) (2x^(5) - 8x^(2) + 11)/(x^(4) + 4x^(2) + 8x^(2) + 8x+4) (2) f(x) = (3 sin^(3)x + cos^(2)x+1)/(4cosx-2)

{:( "Column" A ,, "Column" B) , ("If" a^(2) - b^(2) = 16 "and" a- b = 2 "," "then" a + b,, "(a)" 3x^(2) - x - 11), ("The degree of " (x-a) (x-b) (x - c) (x-d) ,, "(b)" 3x^(2) - x + 5), (4x^(2) + 20xy + 25y^(2) ,, (c) 8), ((5x^(2) + 7x -3)- (2x^(2) + 8x -8) ,, (d) 4), (,, (e) (4x + 5y) (x+ 5y)), (,,(f) (2x + 5y)^(2)):}

Add: (i) 3a - 2b + 5c, 2a + 5b - 7c, -a - b + c (ii) 8a - 6ab + 5b, -6a - ab - 8b, -4a + 2ab + 3b (iii) 2x^(3) - 3x^(2) + 7x - 8, -5x^(3) + 2x^(2) - 4x + 1, 3 - 6x + 5x^(2) - x^(3) (iv) 2x^(2) - 8xy + 7y^(2) - 8xy^(2), 2xy^(2) + 6xy - y^(2) + 3x^(2), 4y^(2) - xy - x^(2) + xy^(2) (v) x^(3) + y^(3) - z^(3) + 3xyz, - x^(3) + y^(3) + z^(3) - 6xyz, - x^(3) - y^(3) - z^(3) - 8xyz (vi) 2 + x - x^(2) + 6x^(3). -6 - 2x + 4x^(2) - 3x^(3). 2 + x^(2). 3 - x^(3) + 4x - 2x^(2)

If A = 3x^2 - 4x + 1, B = 5x^2 + 3x - 8 and C = 4x^2 - 7x + 3 , then find: (i) (A + B) - C (ii) B+C -A (iii) A + B + C