12 root18+6 root20-6 root147+3 root50+8 root45
poornesh:
answer is 79.8772
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12√18+6√20-6√147+3√50+8√45
=12√9×2 +6√4×5 -6√49×3 +3√25×2 +8√9×5
=12×3√2 +6×2√5 -6×7√3 +3×5√2 +8×3√5
=36√2 +12√5 -42√3 +15√2 +24√5
=51√2 +36√5 -42√3
=17√2 +12√5 -14√3
=12√9×2 +6√4×5 -6√49×3 +3√25×2 +8√9×5
=12×3√2 +6×2√5 -6×7√3 +3×5√2 +8×3√5
=36√2 +12√5 -42√3 +15√2 +24√5
=51√2 +36√5 -42√3
=17√2 +12√5 -14√3
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