Step-by-step explanation:
the answer is given below
Answer:
Step-by-step explanation: 10. a)(i) bc-ad= (9*17)-(7*19)
= 153-133= 20
(ii) Given, 13= n
Therefore, b= n-4= 13-4= 9 and in the same way, c= n+4= 13+4= 17 and d= n+6= 13+6= 19.
(iii) bc-ad can also be written as
(n-4)(n+4)-(n-6)(n+6)= (n^2-4^2)-(n^2-6^2)= (n^2-16)-(n^2-36)
= n^2-16-n^2+36= -16+36=20
So the answer for the third part with respect to n is 20.
Hope it helps!
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Verified answer
Step-by-step explanation:
the answer is given below
Answer:
Step-by-step explanation: 10. a)(i) bc-ad= (9*17)-(7*19)
= 153-133= 20
(ii) Given, 13= n
Therefore, b= n-4= 13-4= 9 and in the same way, c= n+4= 13+4= 17 and d= n+6= 13+6= 19.
(iii) bc-ad can also be written as
(n-4)(n+4)-(n-6)(n+6)= (n^2-4^2)-(n^2-6^2)= (n^2-16)-(n^2-36)
= n^2-16-n^2+36= -16+36=20
So the answer for the third part with respect to n is 20.
Hope it helps!