1
Question
(i) If
z = 10, find the value of z3 − 3 (z
− 10).
(ii) If p
= − 10, find the value of p2 − 2p
− 100
(i) If z = 10, find the value of z3 − 3 (z − 10).
(ii) If p = − 10, find the value of p2 − 2p − 100
Open in App
Solution
(i) z3
− 3 (z − 10) = z3 − 3z
+ 30
= (10 × 10 × 10) − (3 × 10) + 30
= 1000 − 30 + 30 = 1000
(ii) p2
− 2p − 100
= (−10) × (−10) − 2 (−10) − 100
= 100 + 20 − 100 = 20
(i) z3 − 3 (z − 10) = z3 − 3z + 30
= (10 × 10 × 10) − (3 × 10) + 30
= 1000 − 30 + 30 = 1000
(ii) p2 − 2p − 100
= (−10) × (−10) − 2 (−10) − 100
= 100 + 20 − 100 = 20
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
