Répondre :
3√8 - (5√8+1)
=3*2√2-5*2√2-1
=-4√2-1
(√10+3) - (3-4√10)
=√10+3-3+4√10
=5√10
(4-√32)-(√50-7)
=4-4√2-5√2+7
=-9√2+11
Toujours sur les équations:
3V8 - (5V8+1) = ?
(V10+3) - (3-4V10) = ?
(4-V32)-(V50-7) = ?
3√8 - (5√8+1)
=3*2√2-5*2√2-1
=-4√2-1
(√10+3) - (3-4√10)
=√10+3-3+4√10
=5√10
(4-√32)-(√50-7)
=4-4√2-5√2+7
=-9√2+11