usinv identities, evaluate
87^2 - 13^2
Answers
Answered by
4
Answer:
(87)^2-(13)^2[a^2-b^2]
= (87+13)(87-13)= 100× 74=7400
Explanation:
Plz mark me brainliest.
Answered by
2
(87-13)² = (87)² - 2 x 87 x 13 + (13)²
= 7,569 - 2,262 + 169
= 7,569 - 2,431
= 5,138
Similar questions