find the roots of the following equations using the formula ........................pls
Attachments:
Anonymous:
what u wrote there 3×1/3 is it?
Answers
Answered by
1
GOOD MORNING!!!!
2) x² - x - 6 = 0
x =( -b ± √{b² - 4ac}) / 2a
here -b = 1 , a = 1 and c = -6
x = ( 1 ± √{1² - 4×1 × -6} ) / 2
=>
x = ( 1 ± √{25})/2
=>
x = (1 ± 5 )/2
=>
x = 6 /2 OR x = -4/2
=>
x = 3 OR x = -2
1)
x² +1 = 10x/3
=>
3x² + 3 - 10x = 0
3x² -10x +3 = 0
x = (10 ± √{ 100 - 36} )/6
=>
x = ( 10 ± √{64} ) /6
=>
x = ( 10 ± 8 ) /2
=>
x = 18/6 OR x = 2/2
=>
x = 3 OR x = 1
2) x² - x - 6 = 0
x =( -b ± √{b² - 4ac}) / 2a
here -b = 1 , a = 1 and c = -6
x = ( 1 ± √{1² - 4×1 × -6} ) / 2
=>
x = ( 1 ± √{25})/2
=>
x = (1 ± 5 )/2
=>
x = 6 /2 OR x = -4/2
=>
x = 3 OR x = -2
1)
x² +1 = 10x/3
=>
3x² + 3 - 10x = 0
3x² -10x +3 = 0
x = (10 ± √{ 100 - 36} )/6
=>
x = ( 10 ± √{64} ) /6
=>
x = ( 10 ± 8 ) /2
=>
x = 18/6 OR x = 2/2
=>
x = 3 OR x = 1
Similar questions