(4) Pazroxsume sa 1) $$ a^{2}-9 $$ 2) $$ b^{2}+10 b+25 $$ 3) $$ 25 x^{2}-16 $$ 4) $$ 9 x^{2}-12 x y+4 y^{2} $$ 5) $$ 5 a^{2}-20 a b $$ 6) $$ 7 x^{3}-14 x^{5} $$ 7) $$ 3 a-3 b+a x-6 x $$

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Разложите на множители:

1) $$ a^{2} - 9 $$
$$
a^{2} - 9 = (a - 3)(a + 3)
$$

2) $$ b^{2} + 10b + 25 $$
$$
b^{2} + 10b + 25 = (b + 5)^{2}
$$

3) $$ 25x^{2} - 16 $$
$$
25x^{2} - 16 = (5x - 4)(5x + 4)
$$

4) $$ 9x^{2} - 12xy + 4y^{2} $$
$$
9x^{2} - 12xy + 4y^{2} = (3x - 2y)^{2}
$$

5) $$ 5a^{2} - 20ab $$
$$
5a^{2} - 20ab = 5a(a - 4b)
$$

6) $$ 7x^{3} - 14x^{5} $$
$$
7x^{3} - 14x^{5} = 7x^{3}(1 - 2x^{2})
$$

7) $$ 3a - 3b + ax - 6x $$
$$
3a - 3b + ax - 6x = 3(a - b) + x(a - 6)
$$
Разложите на множители: 1) $$ a^{2} - 9 = (a - 3)(a + 3) $$ 2) $$ b^{2} + 10b + 25 = (b + 5)^{2} $$ 3) $$ 25x^{2} - 16 = (5x - 4)(5x + 4) $$ 4) $$ 9x^{2} - 12xy + 4y^{2} = (3x - 2y)^{2} $$ 5) $$ 5a^{2} - 20ab = 5a(a - 4b) $$ 6) $$ 7x^{3} - 14x^{5} = 7x^{3}(1 - 2x^{2}) $$ 7) $$ 3a - 3b + ax - 6x = 3(a - b) + x(a - 6) $$

(4) Pazroxsume sa

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