Mathematics: Solve by using the quadratic formula. 3psquared+7p+2=0

Solve by using the quadratic formula. 3psquared+7p+2=0

Ответ:

lealaslee858

14.03.2022

Mathematics

-1/3,-2

Step-by-step explanation:

The quadratic formula is [-b±√(b^2-4ac)]/2a. In this equations 3p^2 is a, 7p is b, and 2 is c.

Then just plug in the numbers.

[-7±√((-7^2)-4(3)(2)]/2(3)

[-7±√(25)]/6

(-7+5)/6 and (-7-5)/6

-1/3 and -2 are the answers, if you plug these numbers into the original equation, you find that they equal 0 which means that they work.

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Ответ:

clarissajimenez27

14.03.2022

Mathematics

$\large\boxed{x=-2\ or\ x=-\dfrac{1}{3}}$

Step-by-step explanation:

The quadratic formula of a quadratic equation

$ax^2+bx+c=0\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

We have the equation:

$3p^2+7p+2=0\to a=3,\ b=7,\ c=2$

Substitute:

$b^2-4ac=7^2-4(3)(2)=49-24=25\\\\\sqrt{b^2-4ac}=\sqrt{25}=5\\\\x_1=\dfrac{-7-5}{2(3)}=\dfrac{-12}{6}=-2\\\\x_2=\dfrac{-7+5}{2(3)}=\dfrac{-2}{6}=-\dfrac{1}{3}$

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Ответ:

jacorey77

23.01.2022

Mathematics

Step-by-step explanation:

you know the best thing to do guess because its a test its fine if you only get like 1-3 wrong and my teacher told me that you only pass a grade by your behavior so your good :)

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Solve by using the quadratic formula.
3psquared+7p+2=0

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