Tick $(✓)$ the correct answer in each of the following:
$(x - 6) (x - 6) = ?$

(a) $(x^{2} - 36)$
(b) $(x^{2} + 36)$
(c) $(x^{2} - 6 x + 36)$
(d) $(x^{2} - 12 x + 36)$

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Solution

$(x - 6) (x - 6) = x^{2} + (- 6 - 6) x + (- 6) (- 6) = x^{2} - 12 x + 36$

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Similar questions

Tick (\checkmark) the correct answer in each of the following:
$(x + 4) (x + 4) = ?$

(a) $(x^{2} + 16)$
(b) $(x^{2} + 4 x + 16)$
(c) $(x^{2} + 8 x + 16)$
(d) $(x^{2} + 16 x)$

Tick $(✓)$ the correct answer in each of the following:

$(x + 5) (x - 3) = ?$

(a) $x^{2} + 5 x - 15$
(b) $x^{2} - 3 x - 15$
(c) $x^{2} + 2 x + 15$
(d) $x^{2} + 2 x - 15$

(x - \frac{1}{x}) = 6

(x^{2} + \frac{1}{x^{2}}) = ?

36 \frac{1}{36}

\frac{x^{2} - 81}{x^{2} - 4} \times \frac{x^{2} + 6 x + 8}{x^{2} - 5 x - 36}

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