Вправи 501 - 600 » 538

Розкладіть на множники тричлен: 1) x2 + 4x + 3 = x2 + x + 3x + 3 = x(x + 1) + 3(x + 1) = (x + 1)(x + 3); 2) x2 – 10x + 16 = x2 – 2x – 8x + 16 = x(x – 2) – 8(x – 2) = (x – 2)(x – 8); 3) x2 + 3x – 18 = x2 – 3x + 6x – 18 = x(x – 3) + 6(x –3) = (x – 3)(x + 6); 4) x2 – 4x – 32 = x2 + 4x – 8x – 32 = x(x + 4) – 8(x + 4) = (x + 4)(x – 8).