Question

simplify using suitable identity (1.5 X + 3 )(1.5 x-3) ​

Answer 1

Answer:

2.25x^2-9

Step-by-step explanation:

Using the identity : (a-b) (a+b) =a^2-b^2

a = 1.5x ; b= 3

identity:a^2-b^2

(1.5x)^2-(3)^2

ANSWER: 2.25x^2-9

Answer 2

Answer:

here we use a^2-b^2=(a+b)(a-b),,,,

now, (1.5X)^2-(3)^2

==>2.25X^2-9

9(0.25X^2-1)

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