Math, asked by aryanparasramka, 9 months ago

√45 -3√20 +4√5 please help me solve it

Answers

Answered by Anonymous
1

Answer:

 \sqrt{45}  - 3 \sqrt{20}  + 4 \sqrt{5}  \\  \\  =  >  \sqrt{5 \times 9}  - 3 \sqrt{20}  + 4 \sqrt{5}  \\  \\  \\  =  > 3 \sqrt{5}  -  3\sqrt{5 \times 4}  + 4 \sqrt{5}  \\  \\  \\  =  >  \sqrt{5} (3 - 6 + 4) =  \sqrt{5}

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Answered by jtg07
5

Step-by-step explanation:

 \huge \boxed {\fcolorbox {green}{pink}{question:}}

 \sqrt{45}  - 3 \sqrt{20}  + 4 \sqrt{5}

 \huge \boxed {\fcolorbox {green}{orange}{solution:}}

√45 = √ 5×3²

√45 = 3√5................(1)

3√20 = 3 √5×2²

3√20 = 6√5

solving further,

3√5 - 6√5 + 4√5

-3√5 + 4√5

√5

 \huge \boxed {\fcolorbox {green}{green}{answer: root5}}

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