How do you multiply #(x + 3)(x - 7)#? Algebra Polynomials and Factoring Multiplication of Polynomials by Binomials 1 Answer Don't Memorise Jul 2, 2015 # =color(blue)(x^2 - 4x -21# Explanation: #color(green)( (x+3)).(x-7)# #=color(green)( (x)).(x-7)+ color(green)((3)).(x-7)# # = x^2 - 7x +3x -21# # =color(blue)(x^2 - 4x -21# Answer link Related questions What is FOIL? How do you use the distributive property when you multiply polynomials? How do you multiply #(x-2)(x+3)#? How do you simplify #(-4xy)(2x^4 yz^3 -y^4 z^9)#? How do you multiply #(3m+1)(m-4)(m+5)#? How do you find the volume of a prism if the width is x, height is #2x-1# and the length if #3x+4#? How do you multiply #(a^2+2)(3a^2-4)#? How do you simplify #(x – 8)(x + 5)#? How do you simplify #(p-1)^2#? How do you simplify #(3x+2y)^2#? See all questions in Multiplication of Polynomials by Binomials Impact of this question 17925 views around the world You can reuse this answer Creative Commons License