Matematika Sekolah Menengah Pertama edisi lebaran (2/5)


f(x) = 25x + 65
Tentukan nilai dari f(2) + f(4) - f(5)​

edisi lebaran (2/5)


f(x) = 25x + 65
Tentukan nilai dari f(2) + f(4) - f(5)​

f(x) = 25x + 65

f(2) = 25(2) + 65

f(2) = 50 + 65

f(2) = 115

f(x) = 25x + 65

f(4) = 25(4) + 65

f(4) = 100 + 65

f(4) = 165

f(x) = 25x + 65

f(5) = 25(5) + 65

f(5) = 125 + 65

f(5) = 190

MAKA :

F(2) + F(4) - F(5)

= 115 + 165 - 190

= 280 - 190

= 90

f(x) = 25x + 65

f(2) = 25 ( 2 ) + 65

f(2) = 50 + 65

f(2) = 115

___________

f(x) = 25x + 65

f(4) = 25 ( 4 ) + 65

f(4) = 100 + 65

f(4) = 165

___________

f(x) = 25x + 65

f(5) = 25 ( 5 ) + 65

f(5) = 125 + 65

f(5) = 190

Jadi :

f(2) + f(4) - f(5)

115 + 165 - 190

280 - 190

90

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