Diketahui:
f(x)=x²+25
g(x)=x+5
Ditanya:
a. f+g(2)=
b. f-g(x)=
c. f×g(x)=
d. f÷g(x)=
e. f÷g(2)=
Mohon bantuannya ![]()
f(x)=x²+25
g(x)=x+5
Ditanya:
a. f+g(2)=
b. f-g(x)=
c. f×g(x)=
d. f÷g(x)=
e. f÷g(2)=
Mohon bantuannya
Penjelasan dengan langkah-langkah:
= f+g(2)
= (x² + 25) + (x + 5)
= (2² + 25) + (2 + 5)
= 4 + 25 + 2 + 5
= 36
= f-g(x)
= (x² + 25) - (x + 5)
= x² - x + 20
= f×g(x)
= (x² + 25)(x + 5)
= x³ + 5x² + 25x + 125
= f÷g(x)
= (x² + 25) ÷ (x + 5)
= (x² + 25)/(x + 5)
= f÷g(2)
= (2² + 25) ÷ (2 + 5)
= (4 + 25) ÷ 7
= 29 ÷ 7
= 29/7
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