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3 years ago

Select whether the equation has a solution or not -roots -no roots

Mathematics

2 answers:

ArbitrLikvidat [17]3 years ago

8 0

No roots heh the answer is 5 so

frozen [14]3 years ago

7 0

The ans is No roots :))

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Pls help with these two math questions

S_A_V [24]

Answer:

For the first one the answer is 60 idk about the 2 one tho

Step-by-step explanation:

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3 years ago

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What is -1 = 5/8b + 3/8

andrew-mc [135]

Answer:

exact form - b = -11/5

decimal form - b = -2.2

Mixed number form - b = -2 1/5

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3 years ago

X/15=5<br> whats the value of x?

SpyIntel [72]

Answer:

x=75

Step-by-step explanation:

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Oksana_A [137]

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2 years ago

Please solve equations by completing square

BlackZzzverrR [31]

$x^2-4x+1=0\\
x^2-4x+4-3=0\\
(x-2)^2=3\\
|x-2|=\sqrt3\\
x-2=\sqrt3 \vee x-2=-\sqrt3\\
x=2+\sqrt3 \vee x=2-\sqrt3$

$x^2+6x-9=0\\
x^2+6x+9-18=0\\
(x+3)^2=18\\
|x+3|=\sqrt{18}=3\sqrt2\\
x+3=3\sqrt2 \vee x+3=-3\sqrt2\\
x=-3+3\sqrt2 \vee x=-3-3\sqrt2\\$

$x^2+20x+3=0\\
x^2+20x+100-97=0\\
(x+10)^2=97\\
|x+10|=\sqrt{97}\\
x+10=\sqrt{97} \vee x+10=-\sqrt{97}\\
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$x^2-2x-5=0\\
x^2-2x+1-6=0\\
(x-1)^2=6\\
|x-1|=\sqrt6\\
x-1=\sqrt6 \vee x-1=-\sqrt6\\
x=1+\sqrt6 \vee x=1-\sqrt6$

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3 years ago