Question

tolong bantu jawab soal kelas 9 mapel matematika ​

Answer 1

Jawaban:

a = 16 , b = 5/-4

Penjelasan dengan langkah-langkah:

[tex]x 12 = \frac{ - b \frac{ + }{ } \sqrt{b ^{2} } - 4ac}{2a } [/tex]

maka

[tex] x12 = \frac{ 2 \frac{ + }{ } \sqrt{ - 2 ^{2} } - 4.3. - 8}{2.3} [/tex]

[tex]x12 = \frac{ 2 \frac{ + }{ } \sqrt{4} + 96}{6} [/tex]

[tex]x1 = \frac{2 + 10}{6} [/tex]

[tex]x1 = 2[/tex]

[tex]x2 = \frac{2 - 10}{6} [/tex]

[tex]x2 = \frac{ - 8}{6} [/tex]

[tex]a = {2}^{3} + {2}^{3} [/tex]

[tex]a = 16[/tex]

[tex]b = \frac{1}{2} + \frac{1}{ \frac{ - 8}{6} } [/tex]

[tex]b = \frac{2}{4} + \frac{3}{ - 4} [/tex]

[tex]b = \frac{5}{ - 4} [/tex]