Question

Tolong bantu jawab, soal yang dicentang ajah
Thanks

Answer 1

4c) 3^x+y = 343
3^x+y = 3^5
x+y = 3

Answer 2

4c. x+y = 5 --> 2x+2y=10
2x+5y= 3 -
-------------
-3y = 7 --> y= -7/3

x-7/3=5 --> x= 5+7/3 = 22/3 =7 1/3

jadi, x= 7 1/3 dan y= -7/3


5b x^2 + 2x + 5 = -3x - 1
x^2 + 2x + 3x + 5 + 1 = x^2 + 5x + 6
(x+3)(x+2)

x1 = -3, x2 = -2

x1+x2 = -3-2 = -5
x1-x2 = -3+2 = -1