Question

expand (3a - 8) (3a + 8)​

Answer 1

Answer:

9a² - 64

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Step-by-step explanation:

we will use one of the properties of multiplication.

(a-b)(a+b) = a²-b²

here,

(3a-8)(3a+8) = (3a)²-(8)² = 9a² - 64