Question

Plz help with this question




(2+√3)^3-2[(2+√3)^2]-7(2+√3)+5
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Answer 1

Answer:11-14-14+√3+5

-12+√4

Done orally

Step-by-step explanation:

Answer 2

$huge \fbox \purple{answer}$

3

Step-by-step explanation:

Given question -:

$(2 + \sqrt{3} ) {}^{3} - 2[(2 + \sqrt{3} {}^{2} )] - 7(2 + \sqrt{3} ) + 5$

Calculate the power

$= > 15 \sqrt{3 } + 26 - 2(2 + \sqrt{3} {}^{2} - 7(2 + \sqrt{3} + 5$

Calculate the power

$= > 15 \sqrt{3 } + 26 - 2(4 \sqrt{3} + 7) - 7(2 + \sqrt{3} ) + 5$

Multiply each term in parentheses by -2

$= > 15 \sqrt{3} + 26 - 2(4 \sqrt{3} ) - 2 \times 7 - 7(2 + \sqrt{3} ) + 5$

Get rid of unnecessary parentheses

$= > 15 \sqrt{3} + 26 - 2 \times 4 \sqrt{3} - 2 \times 7 - 7(2 + \sqrt{3} ) + 5$

Simplify the expression

$= > 15 \sqrt{3} + 26 - 8 \sqrt{3} - 2 \times 7 - 7(2 + \sqrt{3} ) + 5$

Multiply -2 and 7

$= > 15 \sqrt{3} + 26 - 8 \sqrt{3} - 14 - 7(2 + \sqrt{3} ) + 5$

Multiply each term in parentheses by -7

$= > 15 \sqrt{3} + 26 - 8 \sqrt{3} - 14 - 7 \times 2 - 7 \sqrt{3} + 5$

Multiply -7 and 2

$= > 15 \sqrt{3} + 28 - 8 \sqrt{3} - 14 - 14 - 7 \sqrt{3} + 5$

Calculate between the similar terms

.

$= > 0\sqrt{3} + 26 - 14 - 14 + 5$

Calculate the sum or the difference

$= > 0 \sqrt{3} + 3$

If you multiply a number by 0 , it becomes 0

$= > 0 + 3$

0 Doesn't change when you add or subtract

$= > 3$

$hence ,\: your \: answer \: \: is \: \: 3$