Use Euchdse. 2 Fn5kx160has real and equal roots.e.Iind the values of K

1.	Use Euchdse. 2 Fn5kx160has real and equal roots.e.Iind the values of K for which the equation x?+
Answer» When roots are equal discrimanat must be 0.Here we have x² + 5kx + 16 = 0D = (5k)² - 4 × 16 = 0 (5k)² = 64 k² = 64/25 k = √(64/25) k = + or - 8/5 k = 8/5 and -8/5 Please hit like button if you find my solution useful ! Please hit like button if you find my solution useful ! how it became 5k square Formula for discrimanat for equation ax² + bx + c = 0 is D = b² - 4ac , that's the reason oh now i understood thankyou soo much

Use Euchdse. 2 Fn5kx160has real and equal roots.e.Iind the values of K for which the equation x?+

Answer»

When roots are equal discrimanat must be 0.Here we have x² + 5kx + 16 = 0D = (5k)² - 4 × 16 = 0

(5k)² = 64

k² = 64/25

k = √(64/25)

k = + or - 8/5

k = 8/5 and -8/5

Please hit like button if you find my solution useful !

how it became 5k square

Formula for discrimanat for equation ax² + bx + c = 0 is

D = b² - 4ac , that's the reason

oh now i understood thankyou soo much