Which equation has the same solution as 2x^2+x-3=0

1 answer:

iogann1982 [59]3 years ago

8 0

Ax² + bx + c = 0
2x² + x - 3 = 0
2x² + x + (-3) = 0
x = -b +/- √b² - 4ac
 2a
x = 1 + /- √1² - 4(2)(-3)
 2(2)
x = 1 + /- √1 +24
 4
x = 1 +/- √25
 4
x = 1 + /- 5
 4
x = 1 + 5 x = 1 - 5
 4 4
x = 6 x = -4
 4 4
x = 3 x = -1
 2
x = 1 1/2
x = 1 1/2 x = -1

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$\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\
\begin{array}{ccccccccc}
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% (a,b)
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% (c,d)
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$\bf ~~~~~~~~~~~~\textit{distance between 2 points}\\\\
\begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&S&(~ 20 &,& 16~) 
% (c,d)
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\end{array}~ 
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