Question

Find the following(8a +1)(8a - 2)​

Answer 1

$\huge\sf{Solution}$

( 8a + 1 )( 8a - 2 )

= (8a)² + [1 + (-2)] 8a + 1 × -2

= 16a² + [1 - 2] 8a - 2

= 16a² - 8a - 2

Formulas used :-

$\sf{ (x + a)(x + b) = x^{2} + (a + b)x + ab}$  

where ,

           $\sf{x = 8a }\\\sf{a = 1}\\\sf{b = -2}$

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Answer 2

Step-by-step explanation:

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