Question

Me dieron esta formula
(a+b)³= a³+3(a)²b+3(a).(b)²+b³
(a-b)³= a³- 3 (a)²b+3(a).(b)²-b³
Para resolver estos
(a⁴+7)²
(x6-9y)³ este es x ala 6
(2x³+8y5)² este es 8y ala 5

Answer 1

1) a^8 +49 + 14a^4
2) x^18 - (9y)^3 - 3(x)^6(9y)(x^6 +9y)
3) 4x^6 + 64y^10 + 32x^3 y^5

Answer 2

1. ( $a^{4}$ + 7)² = ( $a^{4}$)² + 2 . $(a^{4} )$ . 7 + (7)²

= $a^{4 . 2}$ + 14 $a^{4}$ + 49

= $a^{8}$ + 14 $a^{4}$ + 49