PARABOL Y = AX2 + BX + C ĐI QUA A(0; –1), B(1; –1), C(–1; 1) CÓ PH...

15. - HAM SO 300 BAI TAP HAM SO FILE WORD CO DAP AN
HAM SO 300 BAI TAP HAM SO FILE WORD CO DAP AN
15. Parabol y = ax

2

+ bx + c đi qua A(0; –1), B(1; –1), C(–1; 1) có ph.trình là:A. y = x

2

– x + 1 B. y = x

2

– x –1 C. y = x

2

+ x –1 D. y = x

2

+ x + 1