Question

Twenty-three times a number is more than twice its square by 63. Which of the following values can the number have? 1) 9 4) 8 2) 11 3) 7 5) 10​

Answer 1

Answer:

answer will be 8

Step-by-step explanation:

ur answer will be 8

Answer 2

Step-by-step explanation:

Let the number be x

Given:

x is added to twice its x² which gives 21.

2x² + x = 21

=> 2x² + x -21 = 0

=> 2x² + 7x - 6x - 21 = 0

=> x (2 x + 7) - 3 (2 x 7) = 0

=> (x -3) (2 x + 7) = 0

=> x = 3, - 7/2

The number is 3,- 7/2