Question

7.
Simplify.
(a) 3² + 4²
(b) 2³ – 4²
(c) 1³ + 2³ +3³
(d) (-10)³ + (- 10)² + (-10)¹
(f) (-1)¹⁶ + (- 1)³⁶ + (- 1)⁷ + (- 1)⁵⁴
(e) 3³ - (-2)³​

Answer 1

Answer:

1. 3*3 +4*4 = 144

2. -8

3. 36

Answer 2

Answer with explaination ;

(a)  3² + 4²

   = 9 + 16

   = 25

(b)  2³ – 4²

    = 8 – 16

    = –8

(c) 1³ + 2³ +3³

    = 1 + 8 + 27

    = 36

(d) (-10)³ + (- 10)² + (-10)¹

    = - 1000 + 100 - 100

    = -1000

(f) (-1)¹⁶ + (- 1)³⁶ + (- 1)⁷ + (- 1)⁵⁴

    = 1 + 1 - 1 + 1

    = 2

(e) 3³ - (-2)³

    = 27 + 4

   = 31

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