Question

solve(x+4)(x-5)using algebraic identities ​

Answer 1

Step-by-step explanation:

x(x-5)+4(x-5)=x²-5x+4x-20=0

x²-x-20=0

Answer 2

Answer:

x^2 -x -20

Step-by-step explanation:

(x+4)(x-5) = x^2 +(4-5)x +(4)(-5)

               = x^2 -x -20