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If z = 10, find the value of z3 − 3 (z − 10).

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Question

If z = 10, find the value of z3 − 3 (z − 10).

Sum
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Solution

z3 − 3 (z − 10)

= z3 − 3z + 30

= (10 × 10 × 10) − (3 × 10) + 30

= 1000 − 30 + 30

= 1000

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Chapter 10: Algebraic Expressions - EXERCISE 10.2 [Page 169]

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NCERT Mathematics [English] Class 7
Chapter 10 Algebraic Expressions
EXERCISE 10.2 | Q 8. (i) | Page 169

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