How to work out /17^2-15^2?
2 Answers
Dec 28, 2017
64
Explanation:
The difference of two squares can be written as
Using this formula,
Dec 28, 2017
Explanation:
"using the "color(blue)"difference of squares"
•color(white)(x)a^2-b^2=(a-b)(a+b)
rArr17^2-15^2
=(17-15)(17+15)
=2xx32=64