rewrite the expression (4x^5)square root (8x^4)square root where x is positive without a perfect square factor in radicand

Answer 1

sqr(4x^5) times sqr(8x^4)

= sqr(4x^5 times 8x^4)

= sqr(32x^9)

=4x^4(sqr2x) which may be the answer you want

or

=4sqr2(x^(9/2)

=about 4(1.414)x^(9/2)

= 5.656x^4.5

= about 5.7x^4.5