Question

For the formula D = b- 4ac. a) Find the value of D when a=1,b=-5 and c=3. b) Find the value of c when a =2,b=3 and D=49.For the formula D = b- 4ac. a) Find the value of D when a=1,b=-5 and c=3. b) Find the value of c when a =2,b=3 and D=49.​

Answer 1

answer

d=b-4ac

a=1. b=-5. c=3

d=-5-4(3)

=-5-12

=-17

2) d=b-4ac

a=2. b=3. d=49

49=3-4(2)c

49= 3-8

49=-5

c= -49-5

c= -54