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Inga [223]
3 years ago
10

Factor this equation 4x^2+12x-7

Mathematics
1 answer:
Levart [38]3 years ago
3 0
4x^2+12x-7=0\\\\a=4;\ b=12;\ c=-7\\\Delta=b^2-4ac\\\\\Delta=12^2-4\cdot4\cdot(-7)=144+112=256 \ \textgreater \  0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{256}=16\\\\x_1=\dfrac{-12-16}{2\cdot4}=\dfrac{-28}{8}=\boxed{-\dfrac{7}{2}}\\\\x_2=\dfrac{-12+16}{2\cdot4}=\dfrac{4}{8}=\boxed{\dfrac{1}{2}}
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tester [92]

Answer:

288

Hope this helps :)

7 0
2 years ago
3z-4=6z-17 how do solve
Maru [420]
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5 0
3 years ago
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BARSIC [14]

Answer:

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7 0
3 years ago
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Answer:

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5 0
3 years ago
Can someone please help me i will give free 50 points
Grace [21]

Would it be 11 and 12?

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