Answer:
(a) 15
(b) 270
Step-by-step explanation:
Part (a)
Given expression:
[tex]\left(\sqrt{5}\right)^2 \times \left(\sqrt{3}\right)^2[/tex]
[tex]\textsf{Apply the exponent rule}:\quad \left(\sqrt[n]{a}\right)^n=a,\quad \textsf{$n$ is odd or $a \geq 0$}[/tex]
[tex]\implies 5 \times 3[/tex]
Multiply the numbers:
[tex]\implies 15[/tex]
Part (b)
Given expression:
[tex]\left(\sqrt[3]{9} \right)^3 \times \left(\sqrt{30}\right)^2[/tex]
[tex]\textsf{Apply the exponent rule}:\quad \left(\sqrt[n]{a}\right)^n=a,\quad \textsf{$n$ is odd or $a \geq 0$}[/tex]
[tex]\implies 9 \times 30[/tex]
Multiply the numbers:
[tex]\implies 270[/tex]
