Question

Question 5(e)
Find the product, using suitable properties:
$625\times (-35)+(-625)\times 65$

Answer 1

$625\times (-35)+(-625)\times 65=625\times \left[\right(-35)+(-65\left)\right](a\times b)+(a\times c)=a\times (b+c)=625\times [-100]=-62500$