root 80 -5 root 20 + 3 root 5 plz answer quick and be serious
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Answer:
-3√5
Step-by-step explanation:
√80 - 5√20 +3√5
√16*5 - 5√4*5 +3√5
√16*√5 -5*√4*√5 + 3√5 (Because √ab = √a*√b)
4*√5 - 5*2*√5 + 3√5
4√5 -10√5 + 3√5
7√5 - 10√5
-3√5
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