How do you factor 16r^2 - 25a^2 ?
2 Answers
Apr 25, 2018
Explanation:
Remember:
Using
using
we get
Apr 25, 2018
Explanation:
16r^2-25a^2" is a "color(blue)"difference of squares"
"which factors in general as"
•color(white)(x)a^2-b^2=(a-b)(a+b)
"here "16r^2=(4r)^2" and "25a^2=(5a)^2
rArra=4r" and "b=5a
rArr16r^2-25a^2=(4r-5a)(4r+5a)