Question

Calculati radical din 18-radical din 50+radical din 200

Answer 1

√18=√(9*2)=√9*√2=3√2

√50=√(25*2)=√25*√2=5√2

√200=√(100*2)=√100*√2=10√2

√18-√50+√20=3√2-5√2+10√2=-2√2+10√2=8√2

Answer 2

Răspuns:

8rad2

Explicație pas cu pas:

rad18-rad50+rad200

scoatem factorii de sub radical

3rad2-5rad2+10rad2

(3-5+10)rad2

calculam suma si diferenta

8rad2

Cum am scos factorii de sub radical ?

rad18=rad(3²×2)=rad3²rad2=3rad2

rad50=rad(5²×2)=rad5²rad2=5rad2

si

rad200=rad(10²×2)=rad10²rad2=10rad2