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solve for x 50= x(2(x)+3)

Guest Nov 10, 2014

Best Answer 

 #1
avatar+17745 
+5

50  =  x(2x + 3)

50  =  2x² + 3x

0  =  2x² + 3x - 50

Quadratic formula:  x  =  [ -b ± √( b² - 4·a·c ) ] / ( 2·a )

a = 2          b = 3         c = -50

x =  [ -3 ± √( 3² - 4·2·-50 ) ] / ( 2·2 ) 

x  =  [ -3 ± √( 409) ] / ( 4 )     4.30...   or   -5.80...

geno3141  Nov 12, 2014
 #1
avatar+17745 
+5
Best Answer

50  =  x(2x + 3)

50  =  2x² + 3x

0  =  2x² + 3x - 50

Quadratic formula:  x  =  [ -b ± √( b² - 4·a·c ) ] / ( 2·a )

a = 2          b = 3         c = -50

x =  [ -3 ± √( 3² - 4·2·-50 ) ] / ( 2·2 ) 

x  =  [ -3 ± √( 409) ] / ( 4 )     4.30...   or   -5.80...

geno3141  Nov 12, 2014

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