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DerKrebs [107]
3 years ago
15

How to solve 3p^2-2p-5 step by step without splitting the middle term

Mathematics
1 answer:
choli [55]3 years ago
3 0
3p^2-2p-5= \\\\ a=3 \\ b=-2 \\ c=-5 \\\\ \Delta=(-2)^2-4*3*(-5) =4+60\to\boxed{64} \\\\ x_1;x_2=\frac{-(-2)  +/-  \sqrt{64}}{2*3}  \\\\ x_1;x_2=\frac{2 +/-8}{6} \\\\ x_1=\frac{2+8}{6}=\frac{10}{6}\to\boxed{\frac{5}{3}} \\\\ x_2=\frac{2-8}{6}=\frac{-6}{6}\to\boxed{-1} \\\\ 3p^2-2p-5=(x-\frac{5}{3})(x+1)
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Greeley [361]

Answer:

72

Step-by-step explanation:

you take 85 * 9

85 = # of seats

9 = # of buses

then you get 765

next, you take 765 - 693

765 = # of seats

693 = # people who bought tickets for a trip

finally you get 72

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Substitute into the equation

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8 0
3 years ago
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Step-by-step explanation:

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