3 X square + 5 x minus 12
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Step-by-step explanation:
a=3
b=5
c=-12. D is discrimant
D=b2-4ac
= (5)2-4(3)(-12)
= 25-(12)(-12)
=25+144
= 169
x=-b+-rootD/2a
x=-(5)+-root169/2(3)
x= -5+-13/6
first case
where D is taken as psitive
- x= -5 +13/6
- x=8/6
x= 4/3
second case
where D is taken as negative
- x= -5 -13/6
- x=-18/6
x= -3
two value for are -3 and 4/3
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