fungsi f ditentukan dgn f(x)=x²-5x. nilai f(4)- f(-2)= ?
Matematika
alwan1234
Pertanyaan
fungsi f ditentukan dgn f(x)=x²-5x.
nilai f(4)- f(-2)= ?
nilai f(4)- f(-2)= ?
2 Jawaban
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1. Jawaban Calvadoz
f(4) - f(-2) = 4^2-5.4 - ( -2^2-5.-2) =(16-20) - (4+10) = -4 - 14 = -18 -
2. Jawaban veldien
f(4)=(4.4)-5.4= -4
f(-2)=(-2.-2)-5.-2=14
f(4)-f(-2)= -18