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Dau coroana
URGENT!!


Dau Coroana URGENT class=

Răspuns :

2x-7=5 ⇒2x=5+7 ⇒2x=12 ⇒x=12÷2 ⇒x=6
2. sin60°=√2/2
3.x²-16=(x+4)(x-4)
4. √8+5√2-6√2= 2√2+5√2-6√2= 7√2-6√2= √2
5 Adreptunghi=L×l= 5√2×4=20√2 cm²
6. Masura arcului mare=360°-70°=290°⇒ MN arc=290°