if alpha and beta are the zeros of 2 x square minus 7 x + 3 then find the value Alpha square plus beta square
Answers
Answered by
0
2x²-7x+3=0
2x²-(6x+x)+3=0
2x²-6x-x+3=0
2x(x-3)-1(x-3)=0
(x-3)(2x-1)=0
If x-3=0 then,x=3
alpha= 3
and,
If 2x-1=0 then,x = ½
beta = ½
now ,
alpha + beta
3+½ = 7/2
2x²-(6x+x)+3=0
2x²-6x-x+3=0
2x(x-3)-1(x-3)=0
(x-3)(2x-1)=0
If x-3=0 then,x=3
alpha= 3
and,
If 2x-1=0 then,x = ½
beta = ½
now ,
alpha + beta
3+½ = 7/2
Similar questions