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AfilCa [17]
3 years ago
10

Find the product mentally.

Mathematics
2 answers:
jonny [76]3 years ago
5 0
(2j+7)(2j−7)

=(2j+7)(2j+−7)

=(2j)(2j)+(2j)(−7)+(7)(2j)+(7)(−7)

=4j2−14j+14j−49

=4j2−49

alexira [117]3 years ago
3 0

Answer:

B

Step-by-step explanation:

2j*2j=4j^2

7*-7=-49

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