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3 years ago

Simplify -2√-45 please

Mathematics

2 answers:

algol [13]3 years ago

8 0

Answer:

l-4l+l-3l??

Step-by-step explanation:

Tatiana [17]3 years ago

4 0

Answer:

$-6\sqrt{5i}$

Step-by-step explanation:

$\sqrt{-45} =3\sqrt{5}i$

$-2$ * $3\sqrt{5i}$

= $-6\sqrt{5i}$

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3 years ago

2b^2+4b–2=0 what is the answer?

s2008m [1.1K]

$2b^2+4b-2=0\\
2(b^2+2b-1)=0\\
2(b^2+2b+1-2)=0\\
2((b+1)^2-2)=0\\
2(b+1)^2-4=0\\\
2(b+1)^2=4\\\
(b+1)^2=2\\
b+1=-\sqrt2 \vee b+1=\sqrt2\\
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Step-by-step explanation:

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