Answer:
1) B
2) D
3) D
4) C
Step-by-step explanation:
Q1) 2*sqrt(9)-sqrt(4)=4
Q2) 14*sqrt(5)+9*sqrt(5)=51.4295634825
Q2) 23*sqrt(5)=51.4295634825
Q3) sqrt(5)*sqrt(7)+2*sqrt(35)=17.7482393493
Q3) 3*sqrt(35)=17.7482393493
Q4) 7*sqrt(3)*sqrt(5)-2*sqrt(15)=19.364916731
Q4) 5*sqrt(15)=19.364916731