Question

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

Answer 1

Answer:

$7000$

Step-by-step 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:

$(100)(70) = 7000$