Bonjour.
Politesse !
Simplifier :
E = y×y×11
E = y¹×y×11
E = y¹×y¹×11
E = y¹+¹×11
E = y²×11
E = 11y²
G = 2x×x×5
G = 10x×x
G = 10x¹×x
G = 10x¹×x¹
G = 10x¹+¹
G = 10x²
F = b×4b×b
F = b¹×4b×b
F = b¹×4b¹×b
F = b¹×4b¹×b¹
F = b¹+¹+¹×4
F = b³×4
F = 4b³
H = 9+t×8×t
H = 9+t¹×8×t
H = 9+t¹×8×t¹
H = 9+t¹+¹×8
H = 9+t²×8
H = 9+8t²
Bonne journée.