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sqdancefan

All but the first simplify to something rational.

  • [tex]\sqrt{3}\cdot\sqrt{16}=4\sqrt{3}\qquad\text{irrational}[/tex]
  • [tex]2\sqrt{9}\cdot\sqrt{4}=2\cdot 3\cdot 2=12[/tex]
  • [tex]7\sqrt{3}\cdot\sqrt{3}=7\cdot 3=21[/tex]
  • [tex]\sqrt{5}\cdot\sqrt{5}=5[/tex]
apologiabiology

a rational number is a number that can be written in form a/b where a and b are integers (integers are like -5,-4,-3,-2,-1,0,1,2,3,4, etc)


remember that (√a)(√b)=√(ab)


and √(a^2)=a


do each


√3 · √16=√3·√(4^2)=√3·4=4√3 which is irrational


2√9·√4=2√(3^2)·√(2^2)=2(3)·2=6·2=12 which is rational


7√3·√3=7√(3·3)=7√(3^2)=7(3)=21 which is rational


√5·√5=√(5·5)=√(5^2)=5 which is rational


rational expressions:


2√9·√4


7√3·√4


√5·√5


Read more on Brainly.com - https://brainly.com/question/11545630#readmore

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