Find the product mentally.

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

3 0

Answer:

Step-by-step explanation:

2j*2j=4j^2

7*-7=-49

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