Ответ:
Пошаговое объяснение:
1) |x - 4| = 2 ⇒ a) x - 4 = 2; x = 6; x - 4 = - 2; x = 2; 2) |2x - 5| = 0; 2x - 5 = 0; 2x = 5; x = 2,5; 3) 5|x| + 3 = 7; |x| =(7 - 3) : 5; |x| = 4/5 ⇒x = - 4/5; x = 4/5; 4) |2x + 14| = 6; a) 2x + 14 = 6; 2x = - 8; x = - 4; b) 2x + 14 = - 6; 2x = - 20; x = - 10; 5) |1/x| = 5/8 ⇒ a) 1/x = 5/8; x = 1 : 5/8 = 8/5; b) |1/x| = - 5/8; x = -8/5
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
Пошаговое объяснение:
1) |x - 4| = 2 ⇒ a) x - 4 = 2; x = 6; x - 4 = - 2; x = 2; 2) |2x - 5| = 0; 2x - 5 = 0; 2x = 5; x = 2,5; 3) 5|x| + 3 = 7; |x| =(7 - 3) : 5; |x| = 4/5 ⇒x = - 4/5; x = 4/5; 4) |2x + 14| = 6; a) 2x + 14 = 6; 2x = - 8; x = - 4; b) 2x + 14 = - 6; 2x = - 20; x = - 10; 5) |1/x| = 5/8 ⇒ a) 1/x = 5/8; x = 1 : 5/8 = 8/5; b) |1/x| = - 5/8; x = -8/5