Class 10 Maths1)The quadratic equation has degree

Correct Option: C

2

A quadratic equation has degree 2.

Class 10 Maths2)The cubic equation has degree

Correct Option: C

3

A cubic equation has degree 3.

Class 10 Maths3)A bi-quadratic equation has degree

Correct Option: B

4

A bi-quadratic equation has degree 4.

Class 10 Maths4)The roots of the quadratic equation 6x² – x – 2 = 0 are

Correct Option: C

\({2 \over 3 } , {-1 \over 2 }\)

Class 10 Maths5)The sum of the roots of the quadratic equation \( 3×^2 – 9x + 5 = 0 \ \ is\)

Correct Option: D

-3

Here a = 3, b = -9, c = 5

∴ Sum of the roots = \({−b \over a}= {−(−9) \over 3}=3\)

Class 10 Maths6)If a, p are the roots of the equation (x – a) (x – b) + c = 0, then the roots of the equation (x – a) (x – P) = c are

Correct Option: E

a,b

Explaination:Reason: By given condition, (x – a) (x – b) + c = (x – α) (x – β)

⇒ (x – α) (x – β) – c = (x – a) (x – b)

This shows that roots of (x – α) (x – β) – c are a and b

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