Question

5x²-px+15=o first मूल 3 then salve out the second mool and value of p

Answer 1

Answer:

p = 20

second root = 1

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Step-by-step explanation:

5x² - px + 15 = 0

x = 3

5(3²) - p3 + 15 = 0

3p = 60

p = 20

5x²-20x+15=0

divide by 5

x²-4x+3=0

x²-x-3x+3=0

x(x-3)-1(x-3)=0

(x-1)(x-3) = 0

so x =1