Question

If m= 3 and n=2 find the value of 7m²-8n³​

Answer 1

Answer:

$7 {m}^{2} - 8 {n}^{3} \\ 7 \times {3}^{2} - 8 \times {2}^{3} \\ (7 \times 9) - (8 \times 8) \\ = 63 - 64 \\ = - 1$

Answer 2

Answer:

7m²-8n³

=7×(3)²-8×(2)³

=7×9-8×8

= 63-64

=(-1)

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