[" (i) "4x^(2)-3x+7," (ii) "y^(2)+sqrt(2)],[" (iv) "y+(2)/(-)," (v) "x^(10)+y^(3)+z^(50)]

Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer. (i) 4x^2-3x+7 (ii) y^2+sqrt(2) (iii) 3sqrt(t)+tsqrt(2) (iv) y+2/y (v) x^(10)+y^3+t^(50)

Which of the following expressions are polynomials in one variable and which are not ? State reasons for your answer. (i) 4x^2-3x+7 (ii) y^2+sqrt2 (iii) 3sqrtt+tsqrt2 (iv) y+2/y (v) x^(10)+y^(3)+t^(50)

Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.(i) 4x^2-3x+7 (ii) y^2+sqrt(2) (iii) 3sqrt(t)+tsqrt(2) (iv) y+2/y (v) x^(10)+y^3+t^(50)

Which of the following expressions are polynomials in one variable and which are not ? State reasons for your answer . (i) 4x^(2)-3x+7 (ii) y^(2)+sqrt(2) (iii) 3sqrt(t)+tsqrt(2) (iv) y=(2)/(y) (v) x^(10)+y^(3)+t^(50)

1.Which of the following expressions are polynomials in one variable and which are not State reasons for your answer. (i) 4x^2-3x+7 , (ii) y^2+sqrt2 (iii) 3sqrtt -3t , (iv) y+2/y , (v) x^16+y^5+t^50

If x = 1, y = 2 and z = 5, find the value of (i) 3x - 2y + 4z (ii) x^(2) + y^(2) + z^(2) (iii) 2x^(2) - 3y^(2) + z^(3) (iv) xy + yz - zx (v) 2x^(2) y - 5yz + xy^(2) (vi) x^(3) - y^(3) - z^(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))

Add: (i) 3x, 7x (ii) 7y, -9y (iii) 2xy, 5xy, -xy (iv) 3x, 2y (v) 2x^(2), -3x^(2), 7x^(2) (vi) 7xyz, -5xyz, 9xyz, - 8xyz (vii) 6a^(3) , - 4a^(3), 10 a^(3), - 8a^(3) (viii) x^(2) - a^(2), -5x^(2) + 2a^(2), -4x^(2) + 4a^(2)

Subtract: (i) -8xy from 7xy (ii) x^(2) from -3x^(2) (iii) (x - y) from (4y - 5x) (iv) (a^(2) + b^(2) - 2ab) from (a^(2) + b^(2) + 2ab) (v) (x^(2) - y^(2)) from (2x^(2) - 3y^(2) + 6xy) (vi) (x -y + 3z) from (2z - x - 3y)

Write the following polynomials is standard form. (i) x-9+sqrt 7x^(3) +6x^(2) (ii) sqrt 2x^(2) -(7)/(2) x^(4) +x -5x ^(3) (iii) 7x^(3) - ( 6)/(5) x^(3) +4x -1 (iv) y^(2) +sqrt5y ^(3) -11 -(7)/(3) y+9y^(4)