1 soal MTK. 50+
Please bantu jawab pake cara.
Jamin BA.
Bantu no 2 aja kak
Please bantu jawab pake cara.
Jamin BA.
Bantu no 2 aja kak
[tex]f(x) = - {x}^{2} + 2x + 35[/tex]
[tex]f(a) = 20[/tex]
Penyelesaian:
X ganti menjadi a, sehingga
f(a) = -a² + 2a + 35 = 20
-a² + 2a + 35 - 20 = 0
-a² + 2a + 15 = 0
Kali mines (-)
a² - 2a - 15 = 0
( a - 5) (a + 3) = 0
a - 5 = 0
a = 0 + 5
a = 5
a + 3 = 0
a = 0 - 3
a = -3
Hp = 5 atau -3
[answer.2.content]
