bonjour
a = 10 a
b = 30 a
c = - 8 a²
d = 14 a²
e = 42 a²
f = 6 a ³
g = - 10 a ³
h = - a ³
i = - 6 a ⁴
j = 15 a ⁶
( 2 x )² = 4 x²
( - 3 x)² = 9 x²
- ( 3 x )² = - 9 x²
( 5 x²)² = 5 x ⁴
- ( - 7 x)² = - 49 x²
( 2 x ³)² = 2 x ⁶
( - 5 x ⁴)² = ( - 5 x ) ⁸
( - 3 x ³)² = ( - 3 x ) ⁶
- 2 ( 3 x²)² = ( - 6 x²)² = ( - 6 x ) ⁴
