If roots of x² - 8x + 15 = 0 are increase by 2, new equation is?
- x² - 12x + 35 = 0
- x² - 14x + 35 = 0
- x² - 16x + 35 = 0
- None of these
Explanation
Original equation: x^2 - 8x + 15 = 0
Factor it:
x^2 - 8x + 15 = (x - 3)(x - 5) = 0
So roots are 3 and 5.
Increase each root by 2:
New roots = 3 + 2 = 5, 5 + 2 = 7
Form new equation with roots 5 and 7:
(x - 5)(x - 7) = 0
x^2 - 7x - 5x + 35 = 0
x^2 - 12x + 35 = 0
Last verified on 23-05-2026
Related MCQs
- siny = Cx
- cosy = Cx
- tany = Cx
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- x²/4
- x²/6
- x²/8
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- y = x + 1
- y = x + 2
- y = x + 3
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 1/(s - a)
- (s - a)/1
- 1(s - a)
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 7/15
- 5/7
- 3/9
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Leave a Reply
Your email address will not be published. Required fields are marked *
