Question

$\frac{1}{4} {a}^{2} - 16 = 0$
пожалуйста дам 50 баллов!!!!​

Answer 1

$\dfrac{1}{4} a {}^{2} - 16 = 0 \: \: \: \: \: | \times 4 \to \\ a {}^{2} - 64 = 0 \\ a {}^{2} = 64 \\ a = \pm \sqrt{64} \\ a = \pm8$