How do you simplify $sqrt(15x) times sqrt(21x)$ ?

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Answer 1 · 2016-07-11T15:39:25

$3xsqrt(35)$

Notice that 3 is a factor of both 15 and 21 and so is $x$

$sqrt(3xx5xx x)xxsqrt(3xx7xx x)$

$sqrt(3x)xxsqrt(5)xx sqrt(3x)xxsqrt(7)$

But $sqrt(3x)xxsqrt(3x)=3x$

$3xsqrt(5)sqrt(7) = 3xsqrt(5xx7)=3xsqrt(35)$

Answer 2 · 2016-07-11T15:40:47

$sqrt(15x)*sqrt(21x)=3xsqrt(35)$

$sqrt(15x)*sqrt(21x)$

$sqrt((15x)*(21x))$

$sqrt((3)(5)x*3(7)x)$

$sqrt(3^2*x^2*35)$

$3xsqrt(35)$

God bless....I hope the explanation is useful.

How do you simplify sqrt(15x) times sqrt(21x)sqrt(15x) times sqrt(21x)?