" 15."3x^(2)-2x-1=0

Solve the following equation : (x^(2)-3.5 x + 1.5)/(x^(2)-x-6)=0

If 3x^(2)-7x+2=0 and 15x^(2)-11x+a=0 have a common root and a is a positive real number then the sum of the roots of the equation 15x^(2) -ax +7=0 is

(x^(2)-3.5x+1.5)/(x^(2)-x-6)=0

If a_1,a_2,a_3,a_4 are in H.P. then 1/(a_1 a_4) sum_(r=1)^3 a_r a_(r+1) is a root of (A) x^2-2x-15=0 (B) x^2+2x+15=0 (C) x^2+2x-15=0 (D) x^2-2x+15=0

If a_1,a_2,a_3,a_4 are in H.P. then 1/(a_1 a_4) sum_(r=1)^3 a_r a_(r+1) is a root of (A) x^2-2x-15=0 (B) x^2+2x+15=0 (C) x^2+2x-15=0 (D) x^2-2x+15=0

Out of the following equations, find the equation having the sum of its roots -5. A) 3x^(2)-15x+3=0 B) x^(2)-5x+3=0 C) x^(2)+3x-5=0 D) 3x^(2)+15x+3=0

alpha is root of equation x^(2)-4x+1=0 then (2a^(3)-15a+a^(2)+(1)/(a^(2))+(1)/(a^(3))) is