Question

Va rog frumos urgent (a, b, c)
Dau Coroana!!!! ​

Answer 1

Răspuns:

a) ✓18-3✓32+2✓8-✓72= ✓2×9-3✓16×2+2✓4×2-✓2×36= 3✓2-3×4✓2+2×2✓2-6✓2=3✓2-12✓2+4✓2-6✓2=✓2(3-12+4-6)=-11✓2

b) 0,4✓12-0,9✓27+1,3✓75=0,4✓3×4-0,9✓3×9+1,3✓3×25=0,4×2✓3-0,9×3✓3+1,3×5✓3=0,8✓3-2,7✓3+6,5✓3=✓3(0,8-2,7+6,5)=4,6✓3

c) -2✓80+✓320-4✓20+✓45=-2✓16×5+✓64×5-4✓4×5+✓9×5=-2×4✓5+8✓5+3✓5=✓5(-8+8-8+3)=-5✓5

Explicație pas cu pas:

Sper ca te-am ajutat!