Question

y = -2x2 + 12x - 13

Answer 1

x^2 -12*x -13 = 0
Separate : ( x^2 +x ) + ( -13*x -13 ) = 0
Commutative Law : ( x^2 -13*x ) + ( x -13 ) = 0
Distributive Law : x*( x -13 ) + +*( x -13 ) = 0
Factor : ( x +1 )*( x -13 )