Question

3 X square + 5 x minus 12​

Answer 1

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