Math, asked by ringpicheery, 8 months ago

simplify 2√45-5√20+√30​

Answers

Answered by Anonymous
6

Answer:

 =  > 118 \sqrt{5}

Step-by-step explanation:

2 \sqrt{45}  - 5 \sqrt{20}  +  \sqrt{30}  \\  = 2 \times 3 \times 3 \times 3 \times 3 \times  \sqrt{5 } \\  -5   \times 2 \times  2 \times  2 \times 2  \times  \sqrt{5}  \\ + 2 \times 2 \times 3 \times 3 \times  \sqrt{5}    \\  = 162 \sqrt{5}  - 80 \sqrt{5}  + 36 \sqrt{5}  \\  = (162 + 36 - 80) \sqrt{5}  \\  =  > 118 \sqrt{5}

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