a) x² + 12x - 34 = (x² + 12x + 36 ) - 36 - 34 = (x + 6)² - 70
б) 2y² - 8y + 35 =2 (y² - 4y + 17,5) = 2[(y² - 4y + 4) - 4 + 17,5] =
= 2[(y - 2)² + 13,5] = 2(y - 2)² + 27 = (√2y - 2√2)² + 27
a) x² + 12x - 34 = (x² + 12x + 36 ) - 36 - 34 = (x + 6)² - 70
б) 2y² - 8y + 35 =2 (y² - 4y + 17,5) = 2[(y² - 4y + 4) - 4 + 17,5] =
= 2[(y - 2)² + 13,5] = 2(y - 2)² + 27 = (√2y - 2√2)² + 27