diketahui f(x)=4x-5 dan g(x)=3x^2+x,hitunglah 3 f(-1)+2g(-2)
Matematika
silvi468
Pertanyaan
diketahui f(x)=4x-5 dan g(x)=3x^2+x,hitunglah 3 f(-1)+2g(-2)
1 Jawaban
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1. Jawaban isnani18
3 f(-1) + 2 g(-2) = 3 ( 4(-1)-5 ) + 2 ( 3 (-2)^2 + (-2)
= 3 ( -4 - 5 ) + 2 ( 3 (4) + (-2)
= 3 ( -9 ) + 2 ( 12 - 2 )
= 3 ( -9 ) + 2 ( 10 )
= -27 + 20
= -7