Question

Find the value of 85²-15² using the difference of two squares method ​

Answer 1

`7000`

Explanation:

Recall the form of the difference of squares.

`x^2 - y^2 = (x+y)(x-y)\\\\\\`

Now let's apply it to your numbers:

`85^2 - 15^2 = (85 + 15)(85 - 15)`

Simplify:

`(100)(70) = 7000`