Question

PLZ SOLVE THESE TWO QUESTIONS... WITH EXPLANATION ​

Answer 1

Answer:

(a)=2/5 (b)=3

Step-by-step explanation:

(a) given :-

D=30

Dy=12

hence, 30y=12

y=12/30

y=2/5

(b) given:-

x=3 is one root of f(x)=kx²-10x+3=0

f(3)= k(3)²-10(3)+3=0

9k-30+3=0

9k-27=0

9k=27

k=27/9

k=3

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