Math complicated level1

Which of the following is not a quadratic equation

• x² + 3x – 5 = 0

• x² + x3 + 2 = 0

• 3 + x + x² = 0

• x² – 9 = 0

The quadratic equation has degree

• 0

• 1

• 2

• 3

The cubic equation has degree

• 1

• 2

• 3

• 4

A bi-quadratic equation has degree

• 1

• 2

• 3

• 4

The polynomial equation x (x + 1) + 8 = (x + 2) {x – 2) is

• linear equation

• quadratic equation

• cubic equation

• bi-quadratic equation

The equation (x – 2)² + 1 = 2x – 3 is a

• linear equation

• quadratic equation

• cubic equation

• bi-quadratic equation

The roots of the quadratic equation 6x² – x – 2 = 0 are

• a

• b

• c

• d

The quadratic equation whose roots are 1 and

• 2x² + x – 1 = 0

• 2x² – x – 1 = 0

• 2x² + x + 1 = 0

• 2x² – x + 1 = 0

The quadratic equation whose one rational root is 3 + √2 is

• x² – 7x + 5 = 0

• x² + 7x + 6 = 0

• x² – 7x + 6 = 0

• x² – 6x + 7 = 0

The equation 2x² + kx + 3 = 0 has two equal roots, then the value of k is

• ±√6

• ± 4

• ±3√2

• ±2√6