Question

can u please say me the answer please ​

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

Answer:

1) a)

2) d)

3) a)

4) b)

Explanation: b)

Given values: √=1.732

 2–√=1.414  

We have to find the value of 13–√−2–√

Let t=13–√−2–√

Hence we will first rationalize it in order to make denominator an integer therefore on rationalizing we get:

t=13–√−2–√×3–√+2–√3–√+2–√t=3–√+2–√(3–√−2–√)(3–√+2–√)

Now as we know that:

a2−b2=(a+b)(a−b)

Using this identity for the above equation we get:

t=3–√+2–√(3–√)2−(2–√)2t=3–√+2–√3−2t=3–√+2–√1t=3–√+2–√

Now substituting the given values we get:

t=(1.732)+(1.414)t=3.146

Hence the value of 13–√−2–√

is 3.146.

Note:

This question can also be done by directly substituting the given values and then solving the fraction to get the required value.

13–√−2–√

Substituting the given values we get:

=11.732−1.414=10.318=

= 3.146

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Hope it helps you!!

:)