Question

25. Find the number whose square is 3 less than 4 times the number.

Answer 1

Answer:

$\huge\boxed{\sf x =\{3,1\}}$

Step-by-step explanation:

Let the number be x

Given condition:

x² = 4x - 3

Subtract 4x to both sides and add 3 to both sides

x² - 4x + 3 = 0

Using mid-term break

x² - 3x - x + 3 = 0

Take common

x(x-3) - 1(x-3) = 0

Take (x-3) common

(x - 3)(x - 1) = 0

Using zero's method

Either,

x - 3 = 0     OR     x - 1 = 0

x = 3          OR      x = 1

$\rule[225]{225}{2}$

Answer 2

Answer:

1 or 3

Step-by-step explanation:

hope this helps:)