Question

solve the following
(7x-2y)³​

Answer 1

Step-by-step explanation:

(7x)^2-2×7x×2y+(2y)^2

$49x { }^{2} - 28xy + 4y {}^{2}$

Answer 2

Step-by-step explanation:

˙

= (7x - 2y)³

ℓєτ 7x = α & 2y = b

ɓყ µรเɳɠ ɓเɳσɱเαℓ ƭɦεσɾεɱ ↓

(α-ɓ)³ = α³ - ɓ³ - 3αɓ ( α-ɓ )

= (7x)³ - (2y)³ - 3(7x)(2y) ( 7x-2y )

= 343x³ - 8y³ - 42xy ( 7x - 2y )

= 343x³ - 8y³ - 294x²y - 84xy² ☜αɳร

⭐ ɧơ℘ɛ ıɬʂ ɧɛƖ℘ ყơų ⭐

✨Have a nice day✨