Question

A number x is subtracted from two times its square and the result is 45. An equation to find the value of x would be:

Answer 1

see explanation

Explanation:

2 times the square of x is 2x² , then

2x² - x = 45 ( subtract 45 from both sides )

2x² - x - 45 = 0 ← in standard form

use this equation to solve for x