How do you factor #a^2-100#?

2 Answers
Mar 24, 2018

Answer:

#(a+10)(a-10)#

Explanation:

this is done by difference of squares

#a^2-b^2=(a+b)(a-b)#

#a^2-100=a^2-10^2#

#=(a+10)(a-10)#

Mar 24, 2018

Answer:

#(a-10)(a+10)#

Explanation:

#a^2-100" is a "color(blue)"difference of squares"#

#•color(white)(x)a^2-b^2=(a-b)(a+b)larrcolor(blue)"factored form"#

#"here "a=a" and "b=10#

#rArra^2-100=(a-10)(a+10)#