Question

Expand -
(7d+4)². please check
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Answer 1

Answer:

49d^2 + 16 + 56d

Step-by-step explanation:

Use the identity : (a + b)^2 = a^2 + b^2 + 2ab

a = 7d, b = 4

Answer 2

Answer:

$(7d+4)^{2} =49d^{2} -56d-16$