Question

(i) (4a - 76)(4a + 76)​

Answer 1

Answer:

64a² - 23104. Step-by- step explanation: 2(4a-76)2(4a+76). (8a-152)(8a+ 152). By Id: (a+b)(a-b) =a² - b². (8a)² - (152)².

Answer 2

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Let 4a be a and 76 be b,

As you know, (a-b)(a+b)=a²-b².

So, (4a - 76)(4a + 76)​ = (4a)²-(76)²,

16a²-5776 is the final answer.

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