`3-2x^2+4x^2y+8y-5/3x y^2` is a polynomial in two variables `x` and `y` .

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

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)

Classify the following polynomials as polynomials in one-variable, two variables etc.: (i) x^2-x y+7y^2 (ii) x^2-2t x+7t^2-x+t

Classify the following polynomials as polynomials in one-variable, two variables etc.: (i) t^3-3t^2+4t-5 (ii) x y+z y+z x

2x^2-3x+4,\ 2-x+x^2,\ 2y^2-3/2y+1/4 are quadratic polynomials.

In the algebraic expression 5x^2y+7x y^2-3x y-4y x^2, we have 5x^2y and -4y x^2 as like terms, whereas 7x y^2 and -3x y are unlike terms.

The equation of the circle passing through (1/2, -1) and having pair of straight lines x^2 - y^2 + 3x + y + 2 = 0 as its two diameters is : (A) 4x^2 + 4y^2 + 12x - 4y - 15 = 0 (B) 4x^2 + 4y^2 + 15x + 4y - 12 = 0 (C) 4x^2 + 4y^2 - 4x + 8y + 5 = 0 (D) none of these

Draw the graph of each of the following linear equations in two variables: (i) x+y=4 (ii) x-y=2 (iii) y=3x (iv) 3=2x+y

Draw the graph of each of the following linear equations in two variables:(i) x+y=4 (ii) x-y=2 (iii) y=3x (iv) 3=2x+y

If the graph of 3x^2+4y^2-6x+8y-5=0 and (x-2)^2=4(y+2) are drawn on the same coordinate system, at how many points do they intersect?