Find the roots of the following equations:

(i)

Therefore,the roots are

(ii)

⇒(x + 4)(x - 7) =  30

⇒x² - 3x - 28 = 30

⇒x² - 3x + 2 = 0

⇒x² - 2x - x + 2 = 0

⇒x(x-2) -1(x-2) = 0

⇒(x -1)(x -2) =0

so,x = 1 , 2