Question

3) The square of the binomial (9- a) is​

Answer 1

Answer:

81-a2

Step-by-step explanation:

Answer 2

Answer:

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Step-by-step explanation:

Formula used:

$(x - y) {}^{2} = (x) {}^{2} - 2(x)(y) + (y) {}^{2}$

$(9 - a) {}^{2} \\ \\ (9) {}^{2} - 2(9)(a) + (a) {}^{2} \\ \\ 81 - 18a + a {}^{2}$