(10)/(x+y)+(2)/(x-y)=4

{:((10)/(x + y) - (4)/(x - y)= -2),((15)/(x + y) + (7)/(x - y) = 10):}

{:((10)/(x + y) - (4)/(x - y)= -2),((15)/(x + y) + (7)/(x - y) = 10):}

4x + (10) / (y) = 2; 9x- (4) / (y) = (17) / (20)

If 3 log_(10) (x^(2) y) = 4 + 2 log_(10) x - log_(10) y , where x and y are both + ve, and x - y = 2 sqrt(6) , then the value of x is

Find the square root of the expressions (x^(2))/(y^(2))-10(x)/(y)+27-10(y)/(x)+(y^(2))/(x^(2))

I. (3x-2)//y=(3x+6)//(y+16) II. (x+2)//(y+4) = (x+5)//(Y+10)

For any non-zero real value of "m" ,the equation of the parabola to which the line " mx-y+10+m^(2)=0 " is a tangent,is (A) " x^(2)=y-10 (B) " y^(2)=4(x-2) (C) " x^(2)=-4(y-10) (D) x^(2)=-4y

The factors of x^(2)+4y^(2)+4y-4xy-2x-8 are (a)(x-2y-4)(x-2y+2)(b)(x-y+2)(x-4y-4)(c)(x+2y-4)(x+2y+2) (d) none of these