Question

Evaluate by using suitable identities
104​

Answer 1

$\bigstar$ Correct Question:

• Find (104)² using suitable identities

$\bigstar$ Solution:

(104)²

( 104 = 100 + 4)

= ( 100 + 4 )²

(By using ( a + b )² = a² + 2ab + b²)

= (100)² + 2 (100)(4) + (4)²

= 10000 + 800 + 16

= 10816

$\bigstar$ Formula used:

• ( a + b )² = a² + 2ab + b²

Answer 2

CORRECT QUESTION-:

Evaluate$(104)^3$ by using suitable identities

$\huge\sf\underline{\pink{A}\blue{N}\red{S}\green{W}\orange{E}\purple{R}}$

$\sf{(104)^3}$

$\sf{=(100+4) ^3}$

Using$\sf {=>(a+b)^3=>a^3+b^3+3×ab(a+b)}$

$\sf{=100 ^3 +4 ^3 +3×100×4(100+4)}$

$\sf=1000000+64+1200×104$

$\sf=1000064+124800$

$\sf=1124864$