# 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"#

#â€¢color(white)(x)a^2-b^2=(a-b)(a+b)#

#rArr17^2-15^2#

#=(17-15)(17+15)#

#=2xx32=64#