ICSE Class 10th Mathematics Chapter 5 - Quadratic Equations Important Questions with Answers

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Find which of the following equations are quadratic:

(3x – 1)² = 5(x + 8)

Question 2.

Find which of the following equations are quadratic:

5x² – 8x = –3(7 – 2x)

Question 3.

Find which of the following equations are quadratic:

(x – 4)(3x + 1) = (3x – 1)(x + 2)

Question 4.

Find which of the following equations are quadratic:

x² + 5x – 5 = (x – 3)²

Question 5.

Find which of the following equations are quadratic:

7x³ – 2x² + 10 = (2x – 5)²

Question 6.

Find which of the following equations are quadratic:

(x – 1)² + (x + 2)² + 3(x + 1) = 0

Question 7.

Is x = 5 a solution of the quadratic equation x² – 2x – 15 = 0?

Question 8.

Is x = –3 a solution of the quadratic equation 2x² – 7x + 9 = 0?

Question 9.

If `sqrt (2/3)` is a solution of equation 3x² + mx + 2 = 0, find the value of m.

Question 10.

`2/3`and 1 are the solutions of equation mx² + nx + 6 = 0. Find the values of m and n.