Question

|2x-3|=5? cara 1-2 peesamaan dan pertidaksamaan nilai mutlak. tolong dibantu ya

Answer 1

Verified answer

Matematika Wajib
Persamaan Mutlak X SMA

Pembahasan :
Cara 1

|2x - 3| = 5
(2x - 3)² = 5²
(2x - 3)² - 5² = 0
(2x - 3 + 5)(2x - 3 - 5) = 0
(2x + 2)(2x - 8) = 0
x = -1
x = 4

Hp : {-1 , 4}

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Cara 2

|2x - 3| = 5

2x - 3 = 5
2x = 5 + 3
2x = 8
x = 4

2x - 3 = -5
2x = -5 + 3
2x = -2
x = -1

Hp : {-1 , 4}