Question

Matematika kls 10 cepat yaa

Answer 1

1) 3^(7-4x) ≥ 3^3
7-4x ≥ 3
-4x ≥ 3 - 7
-4x ≥ -4
x ≤ 1

2)  9^(x-2) = 3^(x² - 4x + 1)
(3^2)^(x-2) = 3^(x² - 4x + 1)
3^(2x - 4) = 3^(x² - 4x +  1)
2x - 4 = x² - 4x + 1
x² - 4x + 1 - 2x + 4 = 0
x² - 6x + 5 = 0
(x - 1)(x - 5) = 0
pembuat nol :
x = 1 atau x = 5
jadi solusinya = {1 , 5}

alhamdulillah, sudah kenyang :)