Question

hey guyss.plzz solve this.. 4,5,6,7,8... plzz its urgent​

Answer 1

here is ur solution...

hope so it will help you...

Answer 2

4.) sum of roots is (alpha + beta ) = -b/a = -1

product of roots would be (alpha . beta) = c/a = 1

so 1/alpha + 1/ beta = (alpha + beta)/ alpha. beta

= -1/1 = -1

and alpha² + beta² = (alpha + beta)² - 2. alpha.beta

= (-1)² - 2.1

= -1

5. p(x) = x² -px +p

so product of roota = c/a =p ---1

and sum of roots = -b/a =p

and also , it's given

alpha.beta +alpha +beta +1 =0

= p+p +1 =0

= p= -1/2. , hence

c/1 = -1/2

c= -1/2

7.) sum of zeroes = -b/a = 15/25 = 3/5

• and Product would be = c/a = 2/25

for new equation

• sum of roots =
• $1 \div 2 \alpha \: + 1 \div 2 \beta$
• 2alpha + 2beta/ 4. alpha.beta = 2(15/25)/4(2/25)
• = 30/8

and product of roots =

$1 \div 2 \alpha \times 1 + 2 \beta \: = 1 \times 4 \alpha . \beta$

product of roots = 1/4(2/25)

=25/8

so formula for quadratic equation = x² - sum of roots.x + product of roots

= x² -30/8.p +25/8 = 0

= 8x² -30p +25 =0

left 6th and 8th. u can do it urself