Question

(2a + 7) (2a - 7)
= 2a ( 2a -7 ) +7 ( 2a -7)
=4a2 - 14a+7 ( 2a - 7 )
= 4a2 - 14a +14a -49
= 4a2-49​

Answer 1

Answer:

$(2a + 7)^{2}$

Step-by-step explanation:

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