Question

Someone please help me with this.

Answer 1

Answer:

7. 25/7

8. 18

9. -9

10. -6

Step-by-step explanation:

Answer 2

Given :  ( a² + b² ) /(a -  b) and values of a & b

To find : Evaluate the expression

Solution:

Q . 7  :  ( a² + b² ) /(a -  b)

a = 3

b = 4

=  ( 3² + 4² ) /(3 -  4)

= (9 + 16) /(-1)

= - 25

( a² + b² ) /(a -  b) = -25   when a = 3 , b = 4

Q 8

( a² + b² ) /(a -  b)

a = -3

b = -5

=  ( (-3)² + (-5)² ) /(-3 - (-5))

= (9 + 25) /(-3 + 5)

=  34/2

= 17

( a² + b² ) /(a -  b) = 17   when a = -3 , b = -5

Please post Question one by one

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