1.

(5root7 +3)(4-root7)​

Answer»

ong>Answer:

17√7  - 23

Step-by-step explanation:

(5√7 + 3)(4 - √7)

REMEMBER:

5√7 x 4 = 20√7 ,

3 x √7 = 3√7

and √7 x √7 = 7

(5√7 + 3)(4 - √7)

= 20√7 - 5(7)  + 12 - 3√7

= 20√7 - 35 + 12 - 3√7

= 17√7  - 23



Discussion

No Comment Found

Related InterviewSolutions