How do you simplify $xsqrt a^2 + 6 sqrt a - 3sqrta$ ?

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Answer 1 · 2017-08-17T12:37:21

$color(magenta)(ax+3sqrta$

$xsqrta^2+6sqrta-3sqrta$

$:.=xsqrtaxxsqrta+6sqrta-3sqrta$

$:.=sqrta(xsqrta+6-3)$

$:.=sqrta(xsqrta+3)$

$:.color(magenta)(sqrtaxxsqrta=a$

$:.=xsqrtaxxsqrta+3sqrta$

$:.color(magenta)(=ax+3sqrta$

How do you simplify xsqrt a^2 + 6 sqrt a - 3sqrtaxsqrt a^2 + 6 sqrt a - 3sqrta?