kiara23
Solve. 14x2 + 42x + 70 = 0



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moneybird
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factor out the 7 first

mark_o.
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divide them with 14

mark_o.
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14x^2/14 + 42x/14 + 70/14 = 0/14

mark_o.
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x^2 + 3x + 5 = 0 then try solving for x

mark_o.
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use quadratic formula \[x=[b+\sqrt{(b^2 4ac)}/2a\], here you a=1,b=3,c=5 try them

mark_o.
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youl get an answer of
x=1.5+1.66i and x=1.51.66i ans...

mark_o.
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remember that \[\sqrt{1}=i\]

mark_o.
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let me know if you hve question

kiara23
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im def. lost math is not my strongest subject. i just cant get it

mark_o.
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it just takes practise.....

mark_o.
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do this one til you get the answer

mark_o.
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you already know how to use the quadraic formula right?

kiara23
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a little but not really

mark_o.
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ok try that till u get the answer