Question

$(3a - 1.5)(3a + 1.5)$
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Answer 1

Answer:

$(3a) {}^{2} - (1.5) {}^{2} = 9 {a}^{2} - 2.25$

Answer 2

(a+b) (a-b) =(a-b) ^2

Step-by-step explanation:

9a^2 - 2.25 = 0

9a^2=2.25

a^2=2.25/9

a=√0.25

a=±0.5

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