Question

simplify 30²-10²
please reply ​

Answer 1

Answer:

(a square - b square) = (a+b) (a-b)

(30 square - 10 square) = (30+10) (30-10)

= 800

Answer 2

Question

simplify 30²-10²

Answer:

800

$30^2=900$

$10^2=100$

$900-100$

$=800$

-icebear281