Question

Evaluate the expression when a=8.

a²-9=?

Answer 1

Answer:

(a-3)(a+3) is the answer

Answer 2

$\implies {\blue {\boxed {\boxed {\purple {\sf {55}}}}}}$

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${a}^{2} - 9$

Substituting the value "$a = 8$" in the above expression, we have

➺ $\: {8}^{2} - 9$

➺ $\: (8 \times 8) - 9$

➺ $\: 64 - 9$

➺ $\: 55$

$\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{❦}}}}}$