Question

(5√5-√5)×(4√5+8√5)-19^2=?

Answer 1

is this right or wrong?

Answer 2

$(5 \sqrt{5} - 5) \times (4 \sqrt{5 + 8 \sqrt{5) - 19 {}^{2} } }$
=0×19.136-361
= -341.863