Question

use a suitable identity to get each of the following products d) 2(a-9)square​

Answer 1

Answer:

2(a-9)²

= 2(a²-9²)

= 2(a²-81)

= -79xa²

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Answer 2

Answer:

(2a^2-18^2)

Step-by-step explanation:

2(a-9)^2

by using identity - a^2-b^2 = (a-b)(a+b)

= 2(a+9)(a-9)

=(2a+18)(2a-18)

=(2a^2-18^2)