Question

please solve question no. 7th please do it.

➡Class 10th

➡Content Quality Solution needed.

➡I will mark as a branliest one.

➡No Spams please otherwise will be reported or blocked account.

Answer 1

★ Hi , there !!★


@ = alpha

a= 2 ,

b = 5


c = k



@ + ß = - b / a

=> -5 / 2 --------------------(1)


@ × ß = c / a

=> k / 2 ----------------------(2)



now ,


( @ + ß )² - @ß = 24


=> ( -5 / 2 )² - k / 2 = 24


25 / 4 - k / 2 = 24



25 / 4 -24 = k



=> 25 - 96 / 4 = k / 2


-71 /4 = k/ 2


=> -71 / 2 = k



hope it helps you dear friend !!!



thanks !!

Answer 2

Yeah sure for your help 

.........................

Alpha and beta are the Zeros of polynomial 

2x square+ 5 x + 7 



THEN alpha +beta = -5 ÷2 


ALPHA ×BETA = K ÷2
 

 ( Alpha + Beta)^2 = ( -5 /2 ) ^2
 

Alpha square + Beta square + 2 Alpha beta 


⇒25 /4 


Alpha ∧2 + Beta ∧2 + ALPHA BETA + ALPHA BETA = 25 /4 


24+ K /2= 25 / 4 


⇒ k /2 = 25 /4 -24 


⇒K /2 = 25 /4 - 96 /4 


⇒ K /2 = -71 /4 


⇒ K = -71/4 * 2 


⇒ K = -71 /2 

..............................

Hope you satisfied with my answer 

Please mark as brainlest as if it helps you