Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

I really cannot understand where 1 should be substitued by i^2 and where it should be substituted by(w+w^2).the attachment is attached herewith.

I really cannot understand where 1 should be substitued by i^2 and where it should be substituted by(w+w^2).the attachment is attached herewith.

Question Image
Grade:12th pass

1 Answers

Akshay
185 Points
6 years ago
If you have an equation: f(x) = a.x2+bx+c, it can always written as
f(x) = [x - (-b+(b2-4ac)1/2)/2a] * [x + (-b+(b2-4ac)1/2)/2a] – (1),
in first equation roots will be +i and -i,
in second equation the roots will be w and w2.
Verify this by putting values of a,b,c in eq(1).
 
Normally for problems that have cubic powers, you have to use (1,w,w2) to substitute 1, as i3 is not equal to 1.

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free