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sergiy2304 [10]
3 years ago
8

Simplify\left(2-\sqrt{3}\right)^2

Mathematics
1 answer:
Kobotan [32]3 years ago
6 0

\implies {\blue {\boxed {\boxed {\purple {\sf { C) \:7 + 4 \sqrt{3}}}}}}}

\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}

{( - 2 -  \sqrt{3} )}^{2}

= ({ - 2})^{2}  - 2.( - 2). \sqrt{3}  +  { (\sqrt{3}) }^{2}

= 4 + 4 \sqrt{3}  + 3

= 7 + 4 \sqrt{3}

<h3><u>Note</u>:</h3>

({a - b})^{2}  =  {a}^{2}  - 2ab +  {b}^{2}

\sqrt{a}  \times  \sqrt{a}  = a

\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}

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when 1580 is divided into 13 equal parts, the remainder is 7. What is the correct way to write the quotient
Alisiya [41]

_121_ R7 or 121 7/13
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5 0
4 years ago
Read 2 more answers
What two numbers add up to 6 and multiply to 12?
GuDViN [60]
Erm

x+y=6
xy=12


x+y=6
y=6-x
sub back

xy=12
x(6-x)=12
6x-x^2=12
x^2-6x=-12
x^2-6x+12=0
quadratic formula
for
ax²+bx+c=0
x= \frac{-b+/- \sqrt{b^2-4ac} }{2a}

for
x²-6x+12=0
a=1
b=-6
c=12
and remember that √-1=i

x= \frac{-(-6)+/- \sqrt{(-6)^2-4(1)(12)} }{2(1)}
x= \frac{6+/- \sqrt{36-48} }{2}
x= \frac{6+/- \sqrt{-12} }{2}
x= \frac{6+/- (\sqrt{-1})(\sqrt{12}) }{2}
x= \frac{6+/- (i)(2\sqrt{3}) }{2}
x= \frac{6+/- 2i\sqrt{3} }{2}
x=3+/-i√3

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no real numbers tho
7 0
4 years ago
Can you show the steps <br> thanks .........
Andrews [41]

Answer:

40 black bears

Step-by-step explanation:

Hope it helps.

5 per sample

8 samples

5 x 8 = 40 black bears

4 0
3 years ago
To make lemonade, you used one quart of water, one pint of lemon juice, and 9 ounces of your secret ingredient: honey. How much
devlian [24]
1 qt = 2 pt. 
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1 pt. = 16 fl. oz.

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6 0
4 years ago
Read 2 more answers
A city survey of two neighborhoods asked residents whether they would
masha68 [24]

Answer: 25

Step-by-step explanation:

look at the question

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3 years ago
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