June 2019 1 32 Report
Grafik y = 4x² + 9x + a² selalu diatas sumbu x . batas batas nilai a yang memenuhi adalah ...
A. a> 4
B. a< 4
C. a > 2 1/2 atau a < -2
D. a > 3 1/2 atau a < -3 1/2
E. a > 3 3/4 atau a< -3 3/4

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