Sederhanalah 1.√7+2√10= 2.√10+2√21= 3.√15+2√26= 4.√11+6√2= 5.√21+8√8√5= 6.√25-2√150= 7.√28-2√75= 8.√27+10√2= 9.√11-4√7= 10.√19-8√3=

6)
[tex] \sqrt{25} - 2\sqrt{150} \\ = 5 - 2 \sqrt{2 \times 3 \times 25)} \\ = 5 - 10 \sqrt{6} [/tex]
[tex]3 \sqrt{3} + 10 \sqrt{2} [/tex]
8)





7

[tex] \sqrt{7 \times 4} - 2 \sqrt{25 \times 3} \\ = 2 \sqrt{7} - 10 \sqrt{ 3} [/tex]