Question

expand each expression using algebraic identities (x+4)(x-5)​

Answer 1

Answer:

x(x-5)+4(x-5)

Answer 2

Step-by-step explanation:

Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd(a+b)(c+d)=ac+ad+bc+bd

${x}^{2} - 5x + 4x - 20$

${x}^{2} + ( - 5x + 4x) - 20$

${x}^{2} - x - 20$

hope it help you.