Question

USING IDENTITIES ,,EVLUATE

77× 83

Answer 1

$\huge\mathbb\purple{HELLO\:DEAR}$


$\huge\boxed{\texttt{\fcolorbox{Red}{aqua} {ANSWER : }}}$

77×83

= (80-3)×(80+3)
= (80+3) (80-3)
= (80)²-(3)²
= 6400 - 9
= 6391 [Ans.]

✨✨✨✨ ALWAYS BE BRAINLY ✨✨✨✨

Answer 2

Answer:

Answer is 6391.

Step-by-step explanation:

Check the steps as well as explanation in the photo attached.

Thank You !!