Question

2x^2 + 108 = 42x NEED HELP SOLVING QUADRATIC EQUATION

Answer 1

x = 18

x = 3

Explanation:

2x² - 42x + 108 = 0

common factor is two, so take it out to simplify equation

2 (x² - 21x + 54) = 0

0/2 = 0

x² - 21x + 54 = 0

Factors of 54 which add up to 21 is 18 and 3

(x - 18)(x - 3) = 0

Hence,

x = 18

x = 3