Question

(iv) (x² – 2x +3) (x2 – 2x +5) - 35​

Answer 1

Answer:

let x2-2x=y

assume it to make it easier or else it will be a biquadratic equation

then just get the equation

which comes to be

y2+8y-20=0

after solving the equation you will get 2 roots of equation in terms of y. which are

(y-2)(y+10)=0

so y=2 or -10

Earlier we assumed y to be x2-2x

now put y=x2-2x and solve for 2 and -10

and you will get 4 values of x