Question

срочно нужно решить задание

Answer 1

$\sqrt{ {(a + 3)}^{2} } + \sqrt{ {(a - 4)}^{2} } = \\ = |a + 3| + |a - 4|$
при -3≤ a ≤4

$|a + 3| + |a - 4| = \\ = (a + 3) - (a - 4) = \\ = a + 3 - a + 4 = 7$