Question

please solve this question

Answer 1

here is your ans....a=3 & b= -6

Answer 2

Answer:

put the values in place of x

Step-by-step explanation:

a(-3)^2+7(-3)+b=0

9a -21 + b=0

9 a -21= -b.......i

in x=2/3

a(2/3)^2+7(2/3)+ b=0

4a/9+ 14/3 =-b.......ii

equating i and ii

9a-21 = 4a/3+14/3

9a-4a/3= 14/3+21

lcm = 3

27a-4a= 14+63

23a=77

a=77/23

putting value of a in i

9(77/23) -21=-b

693/23 -21 =-b

lcm=23

(693-483) /23 =-b

210/23 =-b

...

a= 77/23 b=210/23

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hope it helps...!