Question

Solution of
12√18-6√20-3√50+8√45

Answer 1

$12 \sqrt{18}-6 \sqrt{20} -3 \sqrt{50}+8 \sqrt{45}$
$12 \sqrt{9*2} -6 \sqrt{4*5}-3 \sqrt{25*2}+ 8\sqrt{9*5}$
$36 \sqrt{2}-12 \sqrt{5}-6 \sqrt{5}+24 \sqrt{5}$$36 \sqrt{2}-\sqrt{5}(12+6-24)$
$36\sqrt{2}+6\sqrt{5}$
36*1.41+6*1.5=50.91+8.97
=59.88(approx)

Answer 2

the answer is 
12√18-6√20-3√50+8√45
12√9×2-6√4×5-3√2×25+8√9×5
36√2-12√5-15√2+24√5
taking like terms
21√2+12√5
it can't be solved now
by taking value
29.698+ 26.832
593.187