Pertanyaan

Selesaikan setiap PtLSVNM berikut. ∣ 2 x − 5 ∣ ≥ 7

Selesaikan setiap PtLSVNM berikut.

$∣ 2 x - 5 ∣ \geq 7$

A. Salim

Master Teacher

Mahasiswa/Alumni Universitas Pelita Harapan

Jawaban terverifikasi

Jawaban

penyelesaian akhirnya atau .

penyelesaian akhirnya x less or equal than negative 1

atau

Pembahasan

Bentuk mempunyai penyelesaian awal: Atau: Jadi penyelesaian akhirnya atau .

Bentuk open vertical bar 2 x minus 5 close vertical bar greater or equal than 7 mempunyai penyelesaian awal:

$table attributes columnalign right center left columnspacing 0px end attributes row cell space space space 2 x minus 5 end cell less or equal than cell negative 7 end cell row blank left right arrow cell space space space space 2 x less or equal than negative 7 plus 5 end cell row blank left right arrow cell space space space space 2 x less or equal than negative 2 end cell row blank left right arrow cell space space space fraction numerator 2 x over denominator 2 end fraction less or equal than negative 2 over 2 end cell row blank left right arrow cell space space space space space space x less or equal than negative 1 end cell end table$

Atau:

$table attributes columnalign right center left columnspacing 0px end attributes row cell space space space 2 x minus 5 end cell greater or equal than 7 row blank left right arrow cell space space space space 2 x greater or equal than 7 plus 5 end cell row blank left right arrow cell space space space space 2 x greater or equal than 12 end cell row blank left right arrow cell space space space fraction numerator 2 x over denominator 2 end fraction greater or equal than 12 over 2 end cell row blank left right arrow cell space space space space space space x greater or equal than 6 end cell end table$

Jadi penyelesaian akhirnya x less or equal than negative 1 atau x greater or equal than 6 .