Math, asked by ty009, 11 months ago

Maths ch1 pg1.36 q21(SM)

PLZ explain in detail step by step ​

Attachments:

Answers

Answered by Anonymous
4
★Heya★

x = 4⅓ + 4-⅓

Cubing on both sides we have

x³ = ( 4⅓ + 4-⅓ )³

=>

x³ = 4 + 4-¹ + 3 ( 4 ⅓ × 4-⅓ ) ( 4⅓ + 4-⅓ )

Becoz

( a + b )³ = a³ + b³ + 3ab ( a + b )

=>

x³ = 4 + 1/4 + 3 ( 1 ) ( x )

=>

x³ - 3x = 4 + 1/4

=>

MULTIPLY BOTH SIDES BY 4

4x³ - 12x = 16 + 1

=>

4x³ - 12x = 17

☺️☺️☺️
Similar questions