Question

6. (2) Determine nature of roots of the quadratic equations.
(i) 2x2 - 5x + 7 = 0
(ii) x2 + 2x - 9 = 0
+​

Answer 1

$\large { \underline{ \bf \red{Question:- }}}$

Determine nature of roots of the quadratic equations:-

(i) 2x2 - 5x + 7 = 0

(ii) x2 + 2x - 9 = 0

$\large { \underline{ \bf \purple{Solution:- }}}$

$\large { \underline{ \bf \pink{Given:- }}}$

(i) 2x2 - 5x + 7 = 0

(ii) x2 + 2x - 9 = 0

$\large { \underline{ \bf \green{To Find:- }}}$

Determine nature of roots of the quadratic equations.

$\large { \underline{ \bf \blue{Let's\:Do:- }}}$

$\large { \underline{ \bf{Step\:1:- }}}$

$Compare \: 2x²-5x+2=0$

$With \: ax² + bx + c = 0$

$⟶a=2, b=5, c=7$

$∴b²-4 ac = (-5)² - 4 × 2 × 7$

$\large { \underline{ \bf{Step\:2:- }}}$

$⟶ D = 25 - 56$

$⟶D = -31$

$∴b²-4 ac < 0$

$\large { \underline{ \bf \orange{Therefore:- }}}$

• The roots of the equations are not real.

Answer 2

Answer:

10. TH MAI HUN....

Step-by-step explanation:

...AACHA BOLO NA BNOGI KYA.. ASHWINI....