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NikAS [45]
2 years ago
7

For khan academy. Need help immediately. Explain if you can

Mathematics
1 answer:
alexdok [17]2 years ago
4 0
Download connects Q&A they have the answers on there
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Solve 3x2 + 4x = −5.
Alla [95]
Move the -5 over by adding 5 to both sides
3x^2+4x+5=0
must use quadratic formula

for an equation in the form
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^2-4ac} }{2a}

a=3
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x=\frac{-4+/- \sqrt{4^2-4(3)(5)} }{2(3)}
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remember that√-1=i
x=\frac{-4+/- 2i\sqrt{-11} }{6}
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x=\frac{-2+ i\sqrt{-11} }{3} or x=\frac{-2- i\sqrt{-11} }{3}


4 0
3 years ago
What is the answer to ((1+3+6+9)-10)
Daniel [21]

Hey there! :)

((1 + 3 + 6 + 9)) - 10)

Start in the first set of parenthesis.

(19) - 10)

Simplify!

9

Our answer is 9 - hope I helped! :)

6 0
3 years ago
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