Answer :
3x² - 33x - 180 = 0
3(x² - 11x - 60) = 0
3(x² - 15x + 4x - 60) = 0
3(x + 4)(x - 15) = 0
3(x - 4) = 0 or x - 15 = 0
3x - 12 = 0 + 15 + 15
+ 12 + 12 x = 15
3x = 12
3 4
x = 3
The answer is equal to H.15 and E. 4.
3(x² - 11x - 60) = 0
3(x² - 15x + 4x - 60) = 0
3(x + 4)(x - 15) = 0
3(x - 4) = 0 or x - 15 = 0
3x - 12 = 0 + 15 + 15
+ 12 + 12 x = 15
3x = 12
3 4
x = 3
The answer is equal to H.15 and E. 4.