How do you simplify $(5sqrtx+2)(2sqrtx-1)$ ?

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Answer 1 · 2016-08-13T13:40:41

$(5sqrtx+2)(2sqrtx-1)=10x-sqrtx-2$

$(5sqrtx+2)(2sqrtx-1)$

= $5sqrtx×(2sqrtx-1)+2×(2sqrtx-1)$

Now as $sqrtx×sqrtx=x$ above can be multiplied and expanded to appear as

$10x-5sqrtx+4sqrtx-2$

= $10x-sqrtx-2$

How do you simplify (5sqrtx+2)(2sqrtx-1)(5sqrtx+2)(2sqrtx-1)?