Question

if alpha and beta are the zeros of the polynomial P of X equal 4x2 - 12 x + 9 then find the value of alpha + beta - 3 alpha beta​

Answer 1

Answer:

nahi para I glad didn't can't solve this equation plz sorry my all friends

Answer 2

• 4x² - 12x + 9 = 0
• here : a = 4 , b = -12 , c = 9
• α+β = -b/a = -(-12)/4 = 12/4 = 3
• αβ = c/a = 9/4
• then ,
• α+β - 3(αβ) = 3 - 3(9/4) = 3 - 27/4 = (12-27)/4 = -15/4