3 years ago

Quadratic formula for 2x^2-x-3=0

2 answers:

8 0

Ax^2+bx+c=0
a=2
b=-1
c=-3
b+-sqrt( b^2 - 4ac)
2a

so...
-1 +- sqrt(1 + 24)
4
-1 +- 5
4
x= -1 + 5 = 1
4
or
x= -1 - 5 = -3/2
4

pychu [463]3 years ago

6 0

x=1x⁺₋√-1x²-4*2x^2*-3/2(2x^2
This is the equation.

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7(y + 2) – (4y – 10) = 44 – 2y + 5<br> y = -10

andrey2020 [161]

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Answer:

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Can somebody please help me with this?<br><br>

Kisachek [45]

Answer:

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4 0

1 year ago

The denominator of a fraction is four more than the numerator. If both numerator and denominator are increased by eight, the sim

Naddik [55]

The denominator of the fraction is four more than the numerator. The fraction:
$\frac{x}{x+4}$

If both numerator and denominator are increased by eight, the simplified result is 5/6:
$\frac{x+8}{x+4+8}=\frac{5}{6} \\ \\
\frac{x+8}{x+12}=\frac{5}{6} \ \ \ |\times (x+12) \\ \\
x+8=\frac{5}{6}x+\frac{5}{6} \times 12 \\ \\
x+8=\frac{5}{6}x+10 \\ \\
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The original fraction is 12/16.

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3 years ago