if α and β are the zeroes of the polynomial x^2-4x+3 then find the quadratic polynomial whose roots are 3α and 3β. Pls answer it's urgent..... Best answer will be marked as brainliest....
Answers & Comments
SarthakReso
The required polynomial is For steps see the above attached pic.
0 votes Thanks 1
SharmaShivam
ur answer is also right bt u can explain it more..
lxnm
x^2-4x+3 =x^2-3x-x+3 =x(x-3)-1(x-3) =(x-3)(x-1) so x = 3 and x =1 so,alpha = 3 and beta = 1 so,roots of the required polynomial are 9 and 3 now, let the polynomial be ax^2 + bx + c so, alpha + beta = -b/a 9+3 = -b/a 12 = -b/a and, alpha × beta = c/a 9×3 = c/a 27 = c/a so, a = 1 ,b = -12 and c =27 so,the polynomial is x^2-12x+27
Answers & Comments
For steps see the above attached pic.
=x^2-3x-x+3
=x(x-3)-1(x-3)
=(x-3)(x-1)
so x = 3 and x =1
so,alpha = 3 and beta = 1
so,roots of the required polynomial are 9 and 3
now, let the polynomial be ax^2 + bx + c
so, alpha + beta = -b/a
9+3 = -b/a
12 = -b/a
and, alpha × beta = c/a
9×3 = c/a
27 = c/a
so, a = 1 ,b = -12 and c =27
so,the polynomial is x^2-12x+27