Question

4 √5 +5 √5 find the value

Answer 1

Step-by-step explanation:

Hey mate , here is your answer

4√5 + 5√5

= √5 ( 4 + 5 )

= √5 × 9

= 9 √5

Required answer = 9√5

Generally , √5 = 2.236

Hence , 4√5 + 5√5 = 9 ( 2.236 ) = 20.124

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Answer 2

Given:

4√5 + 5√5

To find:

Value of the given sum.

Solution:

4√5 + 5√5

Let's take √5 common so that it will be easy to calculate.

√5(4+5)

√5(9)

Therefore, the answer is 9√5.

Further,

√5 = 2.236.......

9√5 = 9 * 2.236 = 20.124.......

Information:

Any sum given in the form of a√x + b√x = a+b√x.

Remember the highlighted one so that it will be useful in exam corner.

Warning:

The above mentioned one is not an identity but only helps in easy calculation.

Don't write it in the exam!!!

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