Question

Simplify the expression

a)square root of 45
b)square root of 54
c)square root of 16/25

Answer 1

`a)\\\\ \sqrt {45}=√(9\cdot 5)=√(9)\cdot √(5)=3√(5)\\\\b)\\\\ √(54)=√(9\cdot 6)=√(9)\cdot √(6)=3√(6)\\\\c)\\\\\sqrt{(16)/(25 ) }=(√(16))/(√(25))=(4)/(5)`