Question 494776

Such equations are called quadratic equations. Use factorization method or

quadratic formula to solve such equations. 

(x + 1)(x – 2) = 54

=> x^2 -2x + x  -2 = 54

=> x^2 -x -56 =0

=> x^2 -8x +7x -56 =0

=> x(x-8) + 7(x -8)= 0

=>(x+7)(x-8) = 0

x= -7, or 8 .