in this question u need to find the value of x .
3x² - 5x - 7 = 0
=> a=3, b=(-3), c=(-7)
the formula is :
(-b ± root of (b² - 4ac)) / 2a
= 3 ± root of ((-3)² - 4 × 3 × (-7)) / (2 × 3)
= 3 ± root of ( 9 + 84 ) / 6
= 3 ± root of 93 / 6
so, there are two values of x
1. 3 + root of 93 / 6
2. 3 - root of 93 / 6