Question

Expand (7+m)³ pls fast​

Answer 1

Answer:

(7 + m)3 =(7)3 + [ 3 ×(7)2 ×(m)] + [ 3 ×(7)×(m)2] +(m)3

{ ∵(a + b)3 = a3 + 3a2b + 3ab2 + b3 }

= 343 +(3 × 49)m +(3 × 7)m2 + m3

= 343 + 147m + 21m2 + m3

Step-by-step explanation:

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Answer 2

Refer to the attachment.. hope it helps
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