Question

Сократите дробь 1) d2-6d+9\d-3;
2) b+7\b2+14b+49 ;
3) 9-6a+a2\3-a;
4) 1-2p\1-4p+4p2.

Answer 1

Объяснение:

$1) \frac{ {d}^{2} - 6d + 9}{d - 3} = \frac{ {(d - 3)}^{2} }{d - 3} = d - 3 \\ 2) \frac{b + 7}{ {b}^{2} + 14b + 49} = \frac{b + 7}{ {(b + 7)}^{2} } = \frac{1}{b + 7} \\ 3) \frac{9 - 6a + {a}^{2} }{3 - a} = \frac{ {(3 - a)}^{2} }{3 - a} = 3 - a \\ 4) \frac{1 - 2p}{1 - 4p + {4p}^{2} } = \frac{1 - 2p}{ {(1 - 2p)}^{2} } = \frac{1}{1 - 2p}$