Which one is the quadratic equation?

Out of the following equations which one is nota quadratic equation ?

Choose the correct answer for the following questions. (ii) Out of the following equation which one is not a quadratic equation?

Out of the following equations, which one is not a quadratic equation? a) x^2+4x=11+x^2 b) x^2=4x c) 5x^2=90 d) 2x-x^2=x^2+5

Which is the quadratic equation?

Out of the following equations which one is not a quadratic equation ?

Out of the following equations which one is not a quadratic equation ?

Find the value of k, for which one root of the quadratic equation kx^(2)--14x+8=0 is 2.

Find the value of p, for which one root of the quadratic equation px^(2)-14x+8=0 is 6 times the other.

Find the value of a for which one root of the quadratic equation (a^(2)-5a+3)x^(2)+(3a-1) x+2=0 is twice as large as the other.