Question

Which identity is used to find the value of (2a-7) (2a-7)​

Answer 1

Answer:

$(a + b)(a - b) = (a ^{2} - b ^{2} )$

this is the formula

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Answer 2

Answer:

(a²- b²)

Explanation:

(a²-b²) = a²-2ab + b²

(2a-7)=2a²-2*2a*7 +7²

ANSWER= 4A²-28a +49